Not definitively but that's the impression I have after, ooh, maybe eleven instances?Raymond, did you ever find out if it's just on decel?
First time was coming up to set of bends, just back off a bit to moderate speed and that was it, engine gone. Of course, you're in gear so the engine is still turning at whatever speed but open throttle and nothing. And it's been much the same since - shutting off for a junction or whatever.
Worst thing about intermittent problems is they're intermittent - as I'm sure you understand.