Coasting in to gate.
Thanks all for the replies. It could well have been a single engine taxi, from what I remember but the sound of both engines shut down was unmistakable even if the APU was running as I'm sure it probably would have been . I have also been on aircraft that were shutdown and then pushed/pulled to the gate and this was not the case here. We turned off the taxi way into the gate in continuous motion, the engine(s) cut out and spooled down and continued to spool down and we rolled the last 20? feet in near silence.This is the reason I still think about it all these years later and as I said in my post it has not happened since, even on the same airline. I was trying to be vague about the airline as I don't know if its really a big deal or not. I could say its a US low cost airline that favors Boeing aircraft. Anyway I thought I had read on here somewhere before that it was a common practice with some pilots but always wondered if anyone else had experienced with some regularity.