They were the same. Don't know if they did this intentionally. I actually watched them for two minutes for that, and was 99% sure they're the same image, just translated a bit. The final confirmation came near the end, when the other booster entered the view, and you could see for sure, both rectangles streamed from the same camera.
I thought it was interesting that they specifically said the two panels represent the two boosters. I don't think they ever directly claimed each video was from a different booster.
I think they were themselves a bit surprised they were so similar, and weren't yet sure whether they were from different boosters or not, so they kept it vague.
The landing pads were different in the preview, so it indeed looked like it was the same image. Also, no 3D/misalignment effect from cross-eyeing them.
They certainly looked very similar (as they would from that height) but the thruster firings were not at all synchronised (I thought the same thing, until I saw that).
Those are not at all the same. You can see different parts of the ground. You can even tell that the source of the right stream was really to the left of the other one.
You'd think it would be easy to tell. I mean, you see the other booster ignite in both views, which means they have to be looking toward each other - in opposite directions. I don't know about you, but when two people look in opposite directions they tend not to see the same things.
They were not, I've watched closely and right before slowdown burn, attitude engines were firing a little late on one. It was only parts of a second, but clearly visible if you watched closely.
There was a mistake as in the feed they claimed they were separate, but in fact it was a duplicate of the same stream:
https://youtu.be/wbSwFU6tY1c?t=2268