Zooming between SwiftUI and Storyboards

This is probably abusing the system more than it should be but maybe it is somehow possible. I have:

An objective-C based storyboard iPad OS app. I'm beginning to adopt SwiftUI.

I have a hosting controller with a content view that has a lazygrid of cards, which have an NSManagedObject for data. On tapping a card, a detail view opens, if in multi-tasking, a new window, if not, pushing the navigation controller (this detail view still exists in UIKit/ObjC, and is handled by sending a notification with the ObjectID, which then triggers a storyboard segue to the detail.)

I have zoom transitions on all my things. They work great in Obj.C, especially now with the bar button source.

On my iPhone target, I still have an old tableview, and I'm able to zoom properly - if someone changes the detail view's managed object (through a history menu), the zoom context looks up where the tableview is, and scrolls to it while popping.

I'd like to somehow do this on the lazygrid - first) to just have an individual card be the zoom source, it should be able to know what the source view is to say in the prepareForSegue method just to zoom at all. and second) if the detail has changed the current ObjectID (which gets passed around as a notification), to somehow scroll the lazygrid to the right object before popping.

I've looked at https://developer.apple.com/tutorials/SwiftUI/interfacing-with-uikit but this seems like swiftUI is the host. I have it the other way around, uikit hosting swiftUI pushing uikit.

TIA for any pointers

For those following along at home it is possible. I put an overlay UIRepresentable on top of my swiftUI Cell. I use the object ID as accessibility ID. on tap, I send a notification triggering the segue, in prepare for segue I set up the zoom transition, which looks for the UIViewRepresentable to send to the zoom. Works even if I delete the detail and go to the next object in the list. Nice API.

Zooming between SwiftUI and Storyboards
 
 
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