Sadly the 'next' EY BNE-SIN flight is at best 48 hours away (they only fly 3 times a week Mon Thu and Sat) and they will not 'hold' the flight for you. I suggest you take an earlier DJ flight to have 2+hours of transit time in BNE.

I am surprised that EY/DJ does not market a fare for this route, perhaps not wanting to upset SQ?
After checking on EF, VA do publish CBR-SIN fares that allow CBR-BNE-EY/VA-SIN routing. Great value I must say (cheapest comes at 690+taxes return!)