I (stupidly and also for the first time) booked separate flight tickets from Germany to Singapore (Ethiad), from Singapore to Bali (AirAsia) for this July.
I will arrive in Singapore at 9:40 am in T3. My departure flight to Bali is 12:15 pm in T1. What’s the chance that AirAsia has a transfer desk in T3 and let me pass through to T1 without any trouble?
I will be travelling only with a backpack. Thus, I do not need to claim baggages. Or do you think I still need to clear immigration, customs, and check-in at the AirAsia counter outside of the transit area to get my printed boarding pass so I will be allowed to board to my AirAsia flight? If so, do I have enough time to do so in your opinion (about 90 minutes, I’d say. Or 2 hours and 35 minutes – depending on how you count the time)?

Thanks ahead for sharing your wisdom with me.