Technicolor (our post house and CC creators) are working on a 2nd file, which will be up before the end of the month.
This is what they've said:
"The way our captioning is edited is based on shot change/transition, and each cells containing the caption must have a minimum time duration. For this reason, it’s common to enter the dialogue a bit earlier to obtain an optimal duration of subtitle exposure. Our captioning is based on pre-established standards, which differ from those of open caption or BitMax/Netflix (which are very close to the sync)."