Yes, QF45/46 is a B737NG... also operated by Jetconnect.
..which is the reason I will never again fly Q to NZ. I usually fly ANZ Perth-AKL-CHC. Thought I would try the more "direct"route for a change, so went for Per-Syd-CHC with Q. Didn't look properly, inexplicable,my fault, but ended up on a LCC, ala Jetconnect, when I had paid full economy. The single most uncomfortable flight I have ever had. Yes, this has been mentioned many times, the codesharing with LCC's is tarnishing Qantas' brand.
My next AKL flight is in January,in an ANZ 777.