Back to the match I think the set up was right.
Inzaghi used Sanchez and Martinez against Matip and van Dijk, both are slow and short, couldn't do much damage to Liverpool CBs. But I don't think that's Inzaghi's main idea. For whole match we can see that he wants a stabilised midfield, at least if not controlling it, breaking Liverpool's press. Sanchez dropped down and ran like mad to support midfield, Lautaro ran to draw CBs out to make space for Dumfries who would have cross from other sites. Dumfries had multiple occasions was so high outside of the box, in the middle, immediately press in case he couldn't get the ball to prevent counter attack. We could see it from first half, sadly this routine didn't work out much with 0-0 before second half. Red card obviously killed the match for us, I believe we would have 2nd goal. Hakan is unsung hero to me, he had a good match, covered the role of Barella well.