Touchdown was at 0649. The fire was observed approx 20 seconds later. The fire service arrived 57 seconds after the aircraft stopped. ( a very quick and fortuitous time). The fire was put out at 0653 some 4 minutes after initiation.
Some may say a very quick time however to put that in perspective during the Manchester fire the hull was breached betwean 5 and 20 seconds after stopping and the windows gave within a minute of stopping.
Approx 5 Passengers had died from the effect of the flames and heat (the rest from the effects of the toxic smoke) by, at the latest 1:30 minutes after stopping.
Compare this to the timeline of the Singapore incident and work out what they were chatting about at that point.