from Google searches, hired into KC under Todd Haley then promoted to WR coach under Crennel there. Mike McCoy hired him as the QB coach in 2013 for the Chargers then QB coach in 2016. This is where he worked with Reich and Rivers. Reich took him along to Indy as the OC in 2018 and Rivers eventually joining there this past season.
seems to me Reich groomed him for the past few seasons and there's reason to be optimistic about this hire. the connection to Reich I'm sure had a lot to do with the choice, hopefully it's the right one for Wentz since as he goes, we go. overall as a leader though, jury remains silent. not much to go on.
going further back, from Wiki,
would think this means, at the least, he showed good football IQ.