As long as QF flies into Singapore I think you’ll see Jetstar Asia around. Agree can’t see them expanding or even trying to compete with Scoot.
The ole 330 base in Singapore haha yes what a schamozzle that was. Always surprised me they couldn’t work it out or expand it, then again Red Q springs to mind. Then again JQ international is pretty much AUS direct to destinations anyway no stop over required.
As for QF and JQ divorcing... As as been said why would QF sell the LCC who would then be a competitor?