There are lots of chinese receivers which can time out after 15-20 secs and reject the packet.

It's not unusual for some consoles/dongles to have 20 ms MAB spurting out....most receiver codes would not even have a timer/counter to measure the MAB and cause a interrupt ...they just wait it out. But some receivers may not be so charitable.

I have, for instance, come across a 4000K skytracer which just would'nt respond to a PC in a permanent son-et-lumiere setup. Eventually , we inserted a wireless transmitter-receiver pair instead of the direct cable...which worked.

Just one of those things!