Depends on what it needed and where you sent it. You really haven't given enough information to say more.
Generally speaking, bench time is a small fraction of the total turnaround. Some shops are far better at managing workflow than others. I generally ask my watchmaker to tell me when to send it so it isn't sitting around somewhere for months until he gets to it.
If a part is needed, especially one not easyily sourced, that can add to the turnaround time too.