I think that was both the best part and the worst part for me. On the one hand, the interaction between Shirou and Karasuba feel like they were leading up to one of the best conflicts of In Flight, that between Shirou and Karasuba, and this chapter had a lot of that interaction. And yet, for me anywho, that battle between the two of them was brief and felt... lacking in a way. Shirou said himself he couldn't find it in him to hate her, and yet it also lacked Karasuba's "I want to kill him and sex him, not necessarily in that order or maybe at the same time," either, or at least just a brief glimpse of it.
And Minaka... the build-up for that was much briefer than for the battle between Shirou and Karasuba, but at the same it was even more disappointing than the Shirou vs Karasuba battle. The only thing Minaka did that actually seemed to leave an impression on Shirou was that last ditch thing with the Jinki. Ugh. Maybe it was just the build-up of anticipation from waiting so long for this, but I just feel... kind of adrift now, so close to the end.