There's nothing in Nuno's oeuvre to give me confidence that the first half Sunday will lead to a similar sustainable coached/tactical methodology, so I'm not advocate anyone sucks anyone off yet, but you're right, tactically, that was one of our better halves against a top team for 2-3 years, the last time I felt we got things as right was probably Poch v Sarri's Chelsea at Wembley, when he used Alli to stop Jorginho, we were really aggressive and gave them a right good doing.
There was some utter garbage performances from Poch in his first four-five months, but at least we had some prior evidence of his methodology to keep us from giving up hope in those early months. As I said, with Nuno there's no back catalogue of any kind of proactive/progressive method (caveat this with I've only really watched his Wolves team, but nothing I've heard or read says he was an enlightened coach in Portugal or Spain) to sustain us through a "transition" period, so it's very much all a bit of a venture into the unknown.
I said in the match thread after 15-20minutes, the best thing is we are at least playing with some aggression (once that we were also on the front foot too). Whatever tactical approach you take, you have to at least do it with some aggression, even a mid/low block and counter. We lost that completely under Poch, and never got it back under Mourinho.
For thirty minutes Nuno, in tactics and application, got the better of Tuchel, but once Tuchel figured it out, matched us up in that midfield, their superiority won out. I do think that jammy second goal knocked the shit out of us though, at that point I thought we were actually just starting to claw a foothold back in the game after a ropey first 10 second half.
Chances were Chelsea would have chucked Werner on and just picked us off, as we had to come forward once we were behind, but that second goal, followed by the poor sub of Ndombele almost straight after, left us a bit flat. And I don't mean poor sub of Ndombele because he'd been so fabulous he was beyond reproach, I just think at 2-0 up Chelsea probably going to shell a bit, we were probably going to have a bit more ball (we needed to) so we might as well have left our only creative, and ball progressing midfielder out there for at least another 10 minutes. Skipp was good and aggressive when he came on, but was not really what we needed tactically, unless we swapped him for Hojberg to give Alli/LoCelso/Ndombele more license.