I'm re-posting some of my "features" category post here because I think it's relevant to the discussion of walking data.
Based on my experience, it looks like there is a current "workaround" That is, run for just a little bit to start, and then walk -- recording seems to continue when walking, at least at 100 spm, a medium-fast walking pace for me.
I'd like more adjust-ability to the start/stop, but documentation is probably the most important, so we know how it behaves/what to expect. John L's comment above helps clarify this somewhat. I was confused about whether it was 70 spm or 140 spm, and for how long (looks like 140 spm for >6 steps in a row). Still not clear on the "stop" I did my first run last night and did a 40-min cool-down walk afterwards (110 spm) and it recorded that, so my conclusion is that it doesn't stop after 250s of <140 spm. Does this match with what you know? With the new trim feature, I actually prefer it to act in this way, that way if I take walk breaks on a run it doesn't automatically split it up. Also in terms of elapsed time, is the data simply all data collected between start and stop time, with nothing omitted, no time segments are omitted? Similar to other comments in this thread, I may actually want to record some walks as well, since I know I've changed how I walk a lot in the past - after getting comments from several friends, including a PT, I basically trained myself out of my severe overpronation stance when walking. Having a tool like RS could really facilitate this kind of change (the change was decades ago, before I started running)