re: There is no hope for ever solving this issue.

Yeah that's a good ancillary question. Would seem to go to motive/intent.

What the hell was Chauvin waiting for and looking at? You sometimes see that type of thing if there's a multi-arrestee situation wherein the other available officers are busy or in the process of gaining control over their own arrestee. In that situation Chauvin would sit tight for a short while until the situation's completely under control. Then officers determine which arrestee will go into which vehicle, etc.

None of which was involved, from what I've seen.