Don’t we just love a sport where the fans are passionate enough to go through hours of on board video to point things out in a discussion!
The best part is, we get to see footage not many of us had watched before :-)
As for the situation with the STR, I do think that the Pass on Pic posted by @prisoner-monkeys shows that the theory about a waved green flag halfway on the straight ended the yellow is not true. If the LEDs go off with Pic, they would have switched off with Vergne too.
And as pointed out in that video, Red Bull did in fact try to secure things by having Vergne take enough of a distance to allow for a potential penalty, hints that the team were aware of it.
That leaves the question of what @fabik points too, that the app seems to show Vettel might have let Vergne past again to correct that. As I don’t have the app, I will leave it to others to confirm, or debunk that notion.
In the end, the fact that Ferrari did not file a protest points to Vettel and Red Bull having done enough to make sure that a penalty would not be given. Any notion that Ferrari would not like to be seen as sour losers, or even would hesitate at bringing controversy onto this sport – just have a look at all Ferrari statements that for them winning takes priority over everything else.
As Speeds Will Buxton confirmed during the broadcast, Ferrari did have the stewards look at situations with Vettel and a yellow. And in the first interview shown with Nick Fry (on Sky), he clearly confirmed that any questionable moves had been looked at and there was no reason to protest that.
But it does offer a good opportunity to have another look into the season for the long winter evenings, so lets get to the bottom of this ;-)