I wrote this answer and wanted to make sure that I am not violating this community's etiquette. My answer builds on two suggestions made by other users in the comments on the question. Those other users have not, or at least not yet, written their own answers. I think I am on the safe side since (i) I clearly acknowledge their input and (ii) I also significantly (in my view) expand on their comments and add thoughts of my own. However, I would be curious to hear your views.
I guess this question applies generally but the "stakes" might be higher when a bounty is involved, such as in this case.
Follow-up question: Would / should I be "obliged" to any particular behavior in case the authors of the comments decided to actually write their own answers?