How does the use of Gesture and simultaneousGesture differ in gesture handling?

In iOS SwiftUI and UIKit, different approaches are used for gesture handling, but SwiftUI has modifiers .gesture and .simultaneousGesture, which differ in behavior when handling multiple gestures.

• .gesture adds a gesture to a view, but if there is a conflict with another gesture, usually only one of them triggers. This modifier intercepts the gesture and prevents other gestures from triggering simultaneously.

• .simultaneousGesture allows multiple gestures to be handled simultaneously. If multiple gestures are added to a view using .simultaneousGesture, they can trigger in parallel without blocking each other.

Example:

Text("Hello")
    .gesture(TapGesture().onEnded { print("Tap") })
    .simultaneousGesture(LongPressGesture().onEnded { _ in print("Long press") })

In this example, both gestures will trigger on a long press — both tap and long press — thanks to simultaneousGesture. If both were added via .gesture, only one would trigger.