IOS SceneDelegate not invoked when extended in a different target

I have an iOS project with the following targets:

SwiftExtensions (AppTarget) -> depends on Experience
Experience (StaticLibrary) -> depends on Lifecycle
Lifecycle (StaticLibrary)

I have defined the SceneDelegate in Lifecycle library:

public class SceneDelegate: UIResponder, UIWindowSceneDelegate {
    
    // scene(_:willConnectTo:options:) is implemented in Experience

    // scene(_:openURLContexts:) is implemented in Experience

    // Other methods such as sceneWillEnterForeground(_:), sceneDidBecomeActive(_:) etc.
}

As shown above, scene(_:willConnectTo:options:) and scene(_:openURLContexts:) are not defined here.

In the Experience library, SceneDelegate is extended:

extension SceneDelegate {
    
    func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
        
        NSLog("[Experience]: SceneDelegate.scene(_:willConnectTo:options:)")
        
        if (connectionOptions.urlContexts.isEmpty) {
            NSLog("[Experience]: Not launched using file!")
        } else {
            
            NSLog("[Experience]: Launched using file!")
            
            let urlContexts: Set<UIOpenURLContext> = connectionOptions.urlContexts
            
            for (index, urlContext) in urlContexts.enumerated() {
                NSLog(String(format: "[Experience]: url[%d] = %@ ", index, urlContext.url.path()))
            }
        }
    }
    
    func scene(_ scene: UIScene, openURLContexts URLContexts: Set<UIOpenURLContext>) {
        
        NSLog("[Experience]: SceneDelegate.scene(_:openURLContexts:)")
        
        for (index, urlContext) in URLContexts.enumerated() {
            NSLog(String(format: "[Experience]: url[%d] = %@ ", index, urlContext.url.path()))
        }
    }
}

Now, when I tap the app icon, scene(_:willConnectTo:options:) is not invoked. When I tap an associated file type, scene(_:willConnectTo:options:) is not invoked, again. If app is running in background, and I foreground the app by tapping an associated file type, scene(_:openURLContexts:) is not invoked.

Basically, when I define these two methods outside the target, despite with public access modifier, iOS doesn't invoke my delegate methods defined in the other library. My understanding was, Extensions can be used to break up the class. What is missing here?