Probably not, but there's an elegant solution that hasn't been implemented. Layers.

How that would work:
- open your browser, use whatever function to open a new page, navigate to the running apps view, only see two windows because that's all that running
- open your browser, use whatever function to open a new page, navigate to the running apps view, see 9 windows, but on the one winder where there's a tab, there's a '+" overlay, indicating that there are other windows (bonus points for it being +2 or whatever number of browser windows open). Use SailfishOS gesture on the app-tab to slide throw your browser screens - now you have in the multi-apps view an ability to see multiple open browser windows

not done

- in the browser, pull from left-middle of screen to the bottom drags browser chrome down and you are given a "+ new window" to open a new winder; to navigate between browser windows in the app, use an edge gesture (only the left-middle to bottom - or switch to right side language orientation depending) which allows for navigation between multiple pages/tabs in that same app.

Its not all that complicated if you ask me. It just asks for folks to use the device in the same ways its marketed in order to see things like this.

*back to reading the rest of this thread - long way to go