There is no waiting for the Testosterone to return in this case, since it doesn't go when you're on Bicalutamide alone. Actually, it gets pushed to a higher level. It's just a question of expelling the Bicalutamide from your system which is around 30 days, and then it takes time before you start noticing the effect of working androgen receptors again, possibly 2-3 months. I'm not sure anyone has well documented the recovery after Bicalutamide.
The Tamoxifen takes a bit longer than the Bicalutamide to leave your system, and it also boosts Testosterone (unless you're on GnRH hormone therapy drugs too).