Sorry you're having such a tough time. I don't have the answer, but when I'm perplexed I start studying the dealer parts diagrams. The factory manual is a long read, but sometimes scrolling down thru the pictures it'll be colorized as a part of disassembly for something else. The also colorize systems in the initial description chapter, something I never look at when I'm going directly for a parts exchange. Not trying to insult your intelligence here, but dry fitting all that came off can sometimes yield clues. Maybe start with the charge air coolant pump and make sure those hoses are accounted for.