I watched the entire TennoCon 2023 Stream (all 6h) and got no drops...
I noticed about 20 min. before the the start of TennoLive that the drop-progress suddenly showed up, but was stuck on 97% progress left and nothing changed. the drop-progress for Gara Prime did start/register (if i look in the drops/rewards inventory) but with 0 progress throughout the rest of the stream.
I don't particularly care about the Gara Prime drop, because i already have her, but the Gotva Prime would have been nice...
To be honest, I'm kind of against giving valuable items like these away through drops because, at least for me, it's an unreliable system, especially if the amount of people watching is as high as it is during a TennoCon.
It would have been better to go with some form of ingame solution.
I mean, in the end, it's not a big deal, but it's just annoying.