Kangaroo Route SIN Transfer

Hi! I had a quick question about an upcoming trip. I'm flying around the world this coming week, and one of my routes is the Kangaroo Route SYD-SIN-FRA, and I had a couple questions:

1) How does it work during the stop there if you ride through on the same aircraft (I'm looking at QF005)? Do you deplane?
2) If I take QF005 to SIN, it gives me just over 2 hours to make the switch to LH's SIN-FRA flight? How would that transfer work (it's a terminal switch), and would I have enough time to make it?

Any information is greatly appreciated!