It is also possible that in addition to the bloody JD clothing in the bags, LE found something suggesting such a terrible act during the search at 80MS. Phone pings suggested FD spent all afternoon there the day she disappeared (could be a decoy, but he did take phone to Albany Ave and probably needed to be on top of the news).
LE searched 80MS all day starting early the morning after FD and MT were arrested, with the big crime van and more than a dozen police vehicles, and investigators arriving carting briefcases, and the MSM showed LE with a hose pumping out the septic tank there. That same day LE were still searching in NC, but after that they switched focus to MIRA and never went back to New Canaan again (with the exception of possibly a visit to Sturbridge Hill after neighbor reported banging- but this search was not of the length or scope of the 80MS search and I don’t recall if that was before or after the 80MS search).
I always felt they had found some evidence of JD at 80MS given its scope and that LE turned attention to Farmington area after that, and that evidence could have been very gruesome.
The mops and sponges make us all think of the cleanup at Welles Lane (JD house) but it is possible there was some cleanup at another site like 80MS as well. That could be why there are 2 mops, or of course it could be that there were 2 people using mops at one location.
And one final consideration, if LE has extensive video of FD throwing bags out on Albany Ave they likely have some footage suggesting whether some of those bags were quite heavy- how much effort needed to get them into the dumpsters, etc. A bag with clothing and sponges would have shown very differently being tossed, than a bag that was much heavier and cumbersome- I’m no expert here and don’t intend to become one, but JD weighed 120 lbs and 120 divided by even 4 or 5 would still not be a casual toss over ones shoulder. They could likely try to infer whether there were heavy bags from the videos. I don’t envy those who have to spend their days entertaining and imagining all the permutations of this terrible possibility. And feel even more for JDs family having to grapple with these kinds of terrible possibilities of her fate.