Is 2,5 hours connection time in CGK Intl T3 -> Intl T3 on separate tickets enough?

I'm considering a flight to Australia going through Jakarta (CGK) on separate tickets.

Arriving from Europe via JED with Saudia at 17.20 hours and the Qantas flight to Sydney is at 19.50 hours. Would probably need to clear immigration, pick-up bags and re-check, but I assume I have around 90 mins to do that as check-in supposedly closes 60 mins before departure. I would check in online as well, so just need to drop the bags. Unsure if there is an interline agreement and whether it's possible to check bags all the way through.

Anybody knows this?
PS . I have travel insurance