While the extension works fine with Android App Links, it seems that, when using iOS Universal Links, while it is possible to get the app to open via a Universal Link, opening the app this way does not cause the IAC Listener function to trigger.

Using a URI scheme does work OK on iOS. with the listener function triggering correctly, but this does not seem to be the case when using iOS Universal Links. The provided example code only uses a URI scheme and there's no example with Universal Links, which suggests maybe this functionality has not yet been built?