I can't help but think that the low-block that Slot keeps complaining is due to his own tactics. When the transition is this slow of course everyone on the opposing team is getting back in place for defensive duties. No one is going to leave 3 players up top when they are facing a "counter attack".
A lucky gift from Martinez but we need more of the same in the 2nd half. I hope we don't sit on a 1 goal lead because to throw it away in the 89th minute would be a devastating blow.
Slot's 2025 formation is his favoured 4-2-3-1 with the inverted full back system he used in Feyenoord and AZ Alkmaar. It converts into a back 3 on the offensive build-up.
4-3-3 is Klopp's formation which Slot retained in 2024 with modification to playstyle - no or less counter press, focus on retaining possession.
Against Aston Villa, it feels more like 2024's 4-3-3, evident since 9 of 11 players played in that system. The positioning also closer to 4-3-3 and the balls more direct, no (or less) inverted full back plays - maintain width, and 2 midfielders doing link up with the defense instead of having someone like Wirtz or Szobo drop back to collect.
Also, the team doesn't seem to be pressing as high as the 4-2-3-1 where 6 players will camp at the opponent's half during the build-up.
Still no counter-press but tighter formation helped with the 2nd ball press - always have at least 2 players that can apply pressure.
But yeah, Villa not low blocking is the main contributor - Salah's goal would not have been possible if it was a low block.