done

Hey @Dustin_Harris and @Torsten_Zumhof,

I took a stab at this today—a similar approach to the Single Stream Deck Scenario.

Here's what I have:

Set Up

Name the Stream Decks
For both scripts, replace the names 'Stream Deck Standard' and 'Stream Deck XL' with the names of your Stream Decks defined in the "Set Up Stream Deck" section of the SoundFlow Menubar app.

Define the Default Decks
You'll also need to fill out the command IDs for defaultProToolsDeck1 and defaultProToolsDeck2 and again for defaultNONProToolsDeck1 and defaultNONProToolsDeck2. Select the deck you'd like for each in the SoundFlow Editor, then use Command > Copy Command ID.

const defaultProToolsDeck1 = "user:default:cm2az0csu000011100yh9rp56";
const defaultProToolsDeck2 = "user:default:clcf86lse0005xk10di5in8y2";

const defaultNONProToolsDeck1 = "user:default:afdafdafdafafafdafadfafdafdf";
const defaultNONProToolsDeck2 = "user:default:adfafdafafdafdadfadfafaffafa";

Disclaimer
As Irene discovered, if you are using a deck that has the "Navigate to Previous Deck" button, then you will likely need to replace that on all potential subdecks, or at least be aware you will need to click it multiple times from each deck to get back to the "original" deck.

This is mainly an issue if you use the official "Pro Tools Main Deck - 5x3" provided by SoundFlow, which has many subdecks.

In this scenario, you'd have to create editable copies of each deck and reconnect them. In my opinion, it'd be easiest to assign a keyboard shortcut to load the "home deck" in this scenario, allowing you to get back to the top-level deck quickly without having to re-route every subdeck.

When Pro Tools Activate Script

//Don't run if no device connected
if (sf.devices.streamDeck.deviceCount === 0) throw 0;

/*Replace the 'Stream Deck Standard' and 'Stream Deck XL' names with the names of your Stream Decks
https://www.dropbox.com/scl/fi/7lwm9o5b0utzmpf2gqpx3/Stream-Deck-Names.png?rlkey=oc7zo9m6505n3gxhp37c1kssr&dl=0
*/
let deck1 = sf.devices.streamDeck.connectedDevices.filter(x => x.name === 'Stream Deck Standard')[0]
let deck2 = sf.devices.streamDeck.connectedDevices.filter(x => x.name === 'Stream Deck XL')[0]

function showProToolsDeck() {
    /* replace the quotes with your own commandID by clicking on 
    your default pro tools deck and selecting Command -> Copy Command ID
    from the menu bar in soundflow */
    const defaultProToolsDeck1 = "user:default:cm2az0csu000011100yh9rp56";
    const defaultProToolsDeck2 = "user:default:clcf86lse0005xk10di5in8y2";
    
    const proToolsDeck1ToOpen = globalState['lastProToolsDeck1'] ? globalState['lastProToolsDeck1'] : defaultProToolsDeck1;
    const proToolsDeck2ToOpen = globalState['lastProToolsDeck2'] ? globalState['lastProToolsDeck2'] : defaultProToolsDeck2;

    try {
        //show the deck on device 1
        if (deck1) {
            sf.decks.get(proToolsDeck1ToOpen).open({
                device: deck1,
            });
        }
        //show the deck on device 2
        if (deck2) {
            sf.decks.get(proToolsDeck2ToOpen).open({
                device: deck2,
            });
        }

    } catch (err) {
        log('Check Device Connection')
        throw 0
    }
}

showProToolsDeck();

When Pro Tools Deactivates Script

//Don't run if no device connected
if (sf.devices.streamDeck.deviceCount === 0) throw 0;

// Define Decks
let deck1 = sf.devices.streamDeck.connectedDevices.filter(x => x.name === 'Stream Deck Standard')[0]
let deck2 = sf.devices.streamDeck.connectedDevices.filter(x => x.name === 'Stream Deck XL')[0]

/* replace the quotes with your own commandID by clicking on 
    your default NON pro tools deck and selecting Command -> Copy Command ID
    from the menu bar in soundflow */
const defaultNONProToolsDeck1 = "user:default:ckze5vq7z00028r102q85xp2h";
const defaultNONProToolsDeck2 = "user:default:ckze5vq7z00028r102q85xp2h";

function storeCurrentProToolsDeck() {
    //store current deck on device to globalState
    if (deck1) {
        globalState['lastProToolsDeck1'] = deck1.history[0].deck.deckId;
    }
    if (deck2) {
        globalState['lastProToolsDeck2'] = deck2.history[0].deck.deckId;
    }

}

storeCurrentProToolsDeck();

try {
    if (deck1) {
        sf.decks.get(defaultNONProToolsDeck1).open({
            device: deck1,
        });
    }
    if (deck2) {
        sf.decks.get(defaultNONProToolsDeck2).open({
            device: deck2,
        });
    }

} catch (err) {
    log('Check Device Connection')
    throw 0
}

---

Photos of the Two Scripts