No idea. An announcement came from Erdogan, not sure whether equivalent statements were issued by Baku officials but obviously the latter joined in on the project as we can see from the clips you shared.
Of course certain extra-regional or colonial powers will now try to sabotage this arrangement, but Ankara theoretically has the potential to act independently enough in its relations with Iran, as seen on several occasions in the past. To the regime in Baku, this is not only about linking to its exclave of Nakhjavan, it's also about establishing a land corridor to Turkey as part of a broader connection between China and Europe. I doubt the Aliyev regime will defy Turkey on this and go it alone.
At the end of the day, there's nothing much either of them can do. If they occupy Zangezur, which legally belongs to Armenia, Iran will react and they understand full well that two or three "unfortunate" explosions are enough to jeopardize a transportation corridor. Security is the paramount precondition to the viability of any such project, and China is not going to use an insecure road to transfer its goods.
So short of waging war on Iran, which they aren't mad enough to try, they are checkmated as it stands on this matter.
I'd recommend viewing the video discussion I linked to in my above comment if you have time and interest. Many interesting aspects are evoked. I may differ on one or two specific assessments made, but other than that it's a worthwile listen which sheds ample light on what I alluded to.
