Very good episode. Only real flaws were the talking sensors on a stealth mission and the Klingons not killing Burnham immediately on the bridge.
Voq is Tyler, but Tyler does not know. Voq had to give up everything, remember. Still some wriggle room, as the Klingons mentioned he was cast aside.
Lorca is NOT 'Mirror Lorca' or anything like it.
If they are in a parallel universe, Georgiou could still be alive.
The micro jumps of the spore drive in combat were bad as hell. It must be nerfed, too powerful.