How to watch and chat with someone playing a PS4 game?

Not sure if this fits here or in gaming, but here’s the question: I want to be able to watch as my friend plays RDR2 and talk him through something (catching the White Arabian.) I know RDR2 doesn’t have co-op play, but is there a way on the PS4 to be able to view what they’re seeing and talk with them?

The one time I tried this for myself we had some router/bandwidth issue that stopped it from working with my friend and I, but in theory I think this is exactly what you want.

Perfect, thanks, we’ll try that.