In response to my own post - further considerations:
There are some constraints to keep in mind when considering the possibility of dirt bikes used to transport remains for disposal sometime after 5:34 pm on May 24 (i.e. when FD and his cellphone returned to 4JC after delivering PG to 80 MS Rd to pick up his Toyota Tacoma):
- Later that evening, FD and MT drove into Albany Ave area of West Hartford for the evidence dumping trip and surveillance shows FD's Ford Raptor arriving there at 7:31 pm;
- FD went into the New Canaan Police Department at 2:47pm on May 25 and handed over the cellphone he had with him (FD cellphone number ending 8625), at which point it was taken and secured by LE;
- Beginning at 5:39 am on May 25 and then repeatedly throughout May 25th, 26th, and 27th, FD texted the nanny (from FD cellphone number ending 4877) about delivering the children to him, so he would have had that cellphone on his person. On May 26, he also showed up at JFD's mother's apt in NY in an attempt to get the children.
So the time for using the dirt bikes to transport JFD's remains for disposal would have to have been:
- within the 1 hour and 57 minutes between the time FD and his cellphone arrived at 4JC after delivering PG to 80 MS Rd to pickup his Toyota and the time FD and MT arrived at Albany Ave on May 24; OR
- in the hours of increasing darkness after FD and MT arrived back home after that Albany Ave trip; OR
- between phone calls to the nanny on May 25th, 26th, or 27th (otherwise, FD's location would be traceable through his cellphone) and not during the time FD was at the NC Police Dept on May 25; OR
- done by some person(s) other than FD, who used the bike(s) for that purpose.
We do not know the time gaps between FD's calls to the nanny on May 25th, 26th, and 27th, so do not have the information to determine whether there'd be sufficient time between calls to use the dirt bikes to transport remains and dispose of them.