This question has been asked before, but I would like to cast the net a bit wider. Responses included using the Geo-eventProcessor to catch changes in the underlying feature services. It feels a bit like using a canon to kill a fly.
I'm not sure if Survey123 forum is the right place to address this (Ideas also has a couple of entries on this topic), but I would like to see integration of feature services with ITTT or Microsoft Flows as it would allow integration of Survey123 with many more applications.