Racing Bulls had an updated roll hoop on Arvid Lindblad's Formula 1 car at Spa, while Liam Lawson had the previous spec, and Team Principal Alan Permane explained the reason why.
Facing the media in the team principals' press conference on Friday in Spa, Permane explained why his rookie driver got the updated roll hoop, and he delivered an interesting reasoning.
He said: "It's not so easy, and honestly, we don't like bringing updates for just one car. It was impossible for us to do it to two cars.
"It's a chassis modification," he pointed out. "We had to shrink the whole hoop, and we just couldn't do that in time between Silverstone and here on both cars.
"What I did is I sat down with both drivers; I think it was in Austria on Saturday evening. We'd had a very good qualifying. I thought, 'Okay, while everyone's in a good mood, I'll give some bad news. We've got a good update coming, but we can only do one car for Spa, and the next car will be done for the race after in Budapest.'
"So, I first suggested that the very simple option that makes it fair is we upgrade no cars for Spa and then both of them for Budapest. Of course, they looked at me like I was crazy, and I wouldn't have ever done that, so we didn't really seriously consider that.
"The next thing I said is that we can flip a coin, or we can make it a little bit of fun and say whoever qualifies in front at Silverstone gets the upgrade. They both signed up for that, and that's what we did.
"I think what we'll do if it happens again later in the season, and it may happen later because we've got another big thing coming at some point, is it will go to Liam.
"We won't do that again. He'll automatically get it the next time. But we tried to put a little bit of fun into it rather than just allocating it to someone," Permane concluded.
Lindblad outqualified Lawson by three tenths in Silverstone. They were the ninth and tenth fastest, respectively.