As someone else pointed out (Mountain Kat?), if we are to believe the witnessed sightings at 12ish, 2ish and 4ish per the lawyers and the family, that narrows the window down quite significantly - to about 1/2 hour.
Assuming it's the same man with the same baby, that is.
As far as I'm concerned (and I'll guess as far as LE is concerned), MT is a non-issue. First the baby is in a diaper, then in a T-shirt and training pants. First the man is wearing jeans and a T-shirt, then he's dressed all in white and has salt and pepper hair. Meh.
The "white blob" we see on video isn't holding ANYTHING. You can't even tell if it's a man or a woman, imo. So again...meh.
That leaves us with the couple who saw the man with the baby at 12:15 am. and the dumpster fire at 2:19 (ish). Now, to the best of my recollection, no-one saw whoever set the fire, right? So this isn't a sighting. Someone just sees a fire and calls it in. That puts us back to the couple sighting and only the couple sighting, IMO. 12:15. Just 45 minutes after the watchdog neighbor goes inside. Kind of hard to believe this kidnapper hid in the bushes and waited for SB to scram before launching himself through the conveniently open window in the front of the Irwin home, huh?
So...did the couple see a man with a baby dressed only in a diaper? Probably. Was it Lisa and a kidnapper? I doubt it. But it COULD have been someone who knew Lisa, who was carrying her along with them while they went somewhere (store, cig run,, drug run, etc.etc.). I doubt that too, but it's possible, I guess.
All MOO, of course.