Carbonation duration when bottling from Keg

I was wondering what one would think the duration of carbonation would be of an Ale bottled from a Keg?

Considering all the usual processes were followed (Co2 Purge, cold bottles, cap-on-foam, etc), how long would you say that carbonation caricature would last and the beer doesn’t go flat?  I think this is exactly how commercial bottleing occurs, but I just have this question running in my mind.

thanks!

Years

I agree with Jim. It should be no different than a bottle conditioned beer.

I have a Last Straw bottle filler and bottle straight from the keg.  I don’t think I’ve had a bottle go multiple years before getting drank, but I’ve definitely opened bottles more than a year old and the carbonation is still fine.