That drivers side duct can be a huge PITA I’ve found too. I ended up taping it in with RV tape after the plastic broke on one of the tab lock cutouts. I was just under the pax side and that one is of a much better design. It easily snaps into place and is held at the other end by a clip to a dash framing member. And you can see it without turning into a pretzel

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Current
Original owner 2002 E53 X5 4.4i to 4.6i swap
2026 G80 M3 6 spd
2025 G06 X5 50e
Former
1972 Audi Fox
1986 Saab 900S
1996 BMW Z3
1998 BMW E36 M3 Sedan
2004 BMW E46 M3
2006 Audi A3 Quatro
1993 Mopar 318 Jeep Grand Cherokee
2015 V6 Jeep Grand Cherokee