My biggest issue with Chibnall's run continued in this ep:
I don't know what it is about Chibnall's writing, but I just don't feel connected to anyone in his show. Even Jack's parts just felt like warmed-up leftovers from previous episodes, as much as it was nice to see Barrowman again.
Storywise, it just feels so familiar. The crappy-looking earth-built Daleks and Kaled mutants riding around on people's backs may be deliberate callbacks to last year, but that didn't stop them feeling like more of the same. The "Doctor arrives a year late" felt like the similar (but much better) subplot from Aliens of London. The Dalek shootout on the bridge felt like the Cyberman bridge shootout from Army of Ghosts. The Daleks zooming around over London felt like half a dozen other Dalek stories.
American Businessman didn't bother me until he decides to throw the human race under the bus and become a Dalek groupie after thinking about it for about, ooh, 15 seconds? Which serves to do nothing for the plot except alert the Daleks to the presence of the Doctor, which they should've been aware of anyway given her parking job on the bridge. And then apparently the Doctor is fine with letting American Businessman profit from selling out his planet, which also, how exactly? Nobody saw him do a damn thing besides the TARDIS crew and the Daleks.
The most affecting part of the companion departure was Bradley Walsh's performance as he realised he needed to sacrifice travelling with the Doctor to stay with his grandson. I kinda want the alternate universe version of this era where it's just Whittaker and Walsh.
And then we end on a sequence involving Ryan's dyspraxia, a character trait so elusive that you could be forgiven for forgetting it was a thing in the first place.