React Native Deep Linking Push Notifications (Using AWS Pinpoint) - ios

Question

I am trying to set up deep linking for my IOS app using push notifications and can not get notifications to direct a user to a specific screen on a physical device (downloaded via TestFlight).
React Native: 0.66.4
React Navigation: v6
Current Situation
Test push notifications through AWS Pinpoint work (they are successfully sent to a device), but will redirect a user to the wrong route (the initial route / home screen) of the application even when using a deep link. The deep link I am passing through AWS Pinpoint is in the form 'appName://ScreenName' (without the quotes).
The deep link to the page I want the user to go to works, but not as a push notification. For example, if I open Notes on my phone and type 'appName://ScreenName' and press the link I will be redirected to the deep link in my app. This convinces me that deep linking is set up properly, maybe I am wrong here?
If I hardcode the url scheme I want to use into my app.js file (running in development on a physical device) I am directed to the proper screen.
It appears that deep linking is working but Linking.getInitialURL() is not returning the url scheme from a push notifications. The url scheme works, but not as a push notification, whether the app is running in the background or not.
App.js
const config = {
screens: {
'ScreenName': "ScreenName",
},
}
const linking = {
prefixes: ['https://appName.com', 'appName://'],
config,
};
const handleOpenUrl = (event) => {
if (event && event.url) {
const route = event.url.replace(/.*?:\/\//g, "")
if (route?.includes("setmpin")) {
let { hostname, path, queryParams } = Linking.parse(route)
const params = path.split("/")[1]
const listener = Linking.addEventListener(
"url",
handleURL(path.split("/")[0], params)
)
}
}
}
useEffect(() => {
Linking.getInitialURL().then((url) => {
const supported = Linking.canOpenURL(url)
if (supported) {
Linking.openURL(url)
}
})
Linking.addEventListener("url", handleOpenUrl);
return () => {
Linking.removeAllListeners("url");
};
}, [])
Questions...
Am I missing anything glaring here, I have read several stackoverflow and similar posts and am not sure what I have missed.
Am I right to believe that deep linking is setup properly since I can test deep links in my Notes app or by hardcoding the url scheme in my App.js file?
Is there a way to validate what url is being passed by Pinpoint? I believe this is what is driving the issue but do not know how I can check this since push notifications only work on my physical device in production.
Thanks! Happy to share any additional information as well...