The BBC keeps repeating this inaccuracy and at this stage I wonder if it's deliberate:

> The driver replies, "At normal speed?" To which the controller says: "Yes."

That is not how the conversation went. The driver reads back the order from the controller, saying "at normal speed? Hm okay agreed / understood" then the controller starts wrapping up the conversation

ie the driver did not really question the order and it was barely a questioning tone (I write without judgement)

You only need intermediate Spanish to understand that part of the clip. The BBC has no excuse to be honest as I'm sure they have plenty of native speakers on hand

Whether it's a material difference I'm not sure, but the BBC should be more accurate