I suspect you're probably right on that count. This series will focus on the Flux and dealing with Swarm and Azure while the specials will deal with the Division, The Fugitive Doctor, and any other remaining threads involving The Timeless Child.
That's unfortunate, as the Flux and the TC story seem so closely connected at this point that solving one riddle satisfyingly without the other seems more and more unlikely to me. I mean, I don't rule out it
will be. There are still 3 episodes left, what could possibly go wrong?
I thought a bit about why this episode felt so... meh to me.
1. The timelines/ memories: An interesting concept. However, in execution, the "memories", particularly of Yaz and Dan didn't tell us anything new or interesting about them. And it should have been used for that. We already knew he was into Diane, but a bit awkward/ gunshy; unless that detail about being jilted 15 ys ago becomes important (Evil Dan Conformed11!1), it was superfluous. Same with Yaz. Yes, she has a family back home. Yes she was and maybe will be a PC again; if that is somehow relevant to her right now, make me care. OK, it set up the Weeping Angels having it out for her, I guess...
As for the Doctor, did we learn anything new except for the fact that she is supposedly responsible for the Flux?
For Vinder, we got the obligatory info dump; not bad as far as Chibnall exposition goes, it's just that the Bel sideplot didn't work for me at all. I mean, I had to laugh out loud when they had her exposition to the cyberman that she's doing it All For Love. I almost expected them to burst into song and dance.
(Fun fact - stupid "sjw forced diversity bbc agenda" people, take note: Da Man does The Right Thing. The woman is doin' it All For Love and her "as yet unborn child".) Which... Is the pregnancy supposed to make me care more for her/ Vinder? I bet the child is going to be Very Special, Timeless or not...
tbc
(I lost a longer document to my Evil Computer, so I'll post bits and pieces if and when I remember them.)