By the end of the meeting, we were talking about coming back part time as a consultant reporting directly to him. So who knows what the future holds.
It's great to have an open mind.
When I retired, I left open the possibility of "helping out" if needed.
A few months later I got a call to ask if I'd help out for a while. I agreed to consult for 2 days per week, 8 hours per day, but no more. It turned out great! I was able to concentrate solely on the "fun" aspects of my former role, with none of the foolish administrivia or management politics I formerly had to endure and no nights and weekends.
I did that for a year, until my former team got back on its feet.
Thoroughly enjoyed it and would do it again if needed.