External Display with SwiftUI in 2024

What is current best-practice for supporting an external display in a SwiftUI iOS app in 2024?

(I'm only interested in iOS 17 and/or iOS 18)

The only docs I found require abandoning the SwiftUI App structure and "switching back to a full UIKit App Delegate".

Is this still the only option? Are there any complete examples on how to accomplish this?

Also is testing external displays with Simulator at all reliable? All experiences I read about say that it never works.

Thanks in advance.

External Display with SwiftUI in 2024
 
 
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