punto:
Thank you, I took this advice to heart. I've been generally just letting things play out without much effort.
Now something seems naturally inclined to investigate, though, and it would seem I need to let this too play out.
Investigation - right! You've painted - what would be considered - a nice picture for some. The subtle remnants of self knows this niceness too! What seems to happen here is a subtle clinging of aggregates which convene around the experiences you describe. It can be so subtle that it is very easy to miss and that subtleness further hides-out in a relaxed and spacious attitude.
So, my approach has been to investigate, probe, and enquire with diligence. Yes, there's a sort of efforting in this but that effort is born of the enlightenment factor of investigation which should be quite developed for you in those regions. Often the investigation is automatic but the mind has become so curious through practice, not having found a place to call home, it seeks to land itself on a form-based object so it needs to be ever-so-slightly coerced into further and further points of investigation. One does not need to investigate all the time, just remember to investigate occasionally and try to look beyond your current abilities to investigate - the investigation should have this quality although not in clearly defined steps: from coarse to medium-coarse to fine and finer... and so on and so forth.