Originally Posted by dici

If you have luggage check-in, they probably won't allow you to do this. It might due to the ground worker dispute last two years ago and they had to follow what has been agreed in the contract.

But if you only has a carry on you might can try. Just most of the time, SIN-KUL load is almost full (> 90% in Y), and MH definitely don't want to risk their on-time performance. My last 2-3 flights from KUL to SIN, we had to wait for connecting passenger to catch our flight even thought all remaining passengers were fully boarding 5 minutes before departure. And Changi also has the tendancy of suddenly stopping any incoming flight if they found their air space suddenly full.