They were fighting. It was easy to know when the McLaren boys had disagreements, the two young men acting awkward and tense around each other. It was very unusual. They were stiff, not wanting to deal with the other. Oscar had tried apologizing various times, but he didn't really feel sorry, and he wasn't one to say things he didn't mean. Lando was being petty and childish about it, not wanting to compromise and make up.
The problem was that you had no idea why they had a disagreement. They wouldn't budge either. It couldn't have been something dumb or insignificant if they were acting like they hated their guts. Well, they might hate their guts as of right now. So the only thing left to do was have them sitting in your office, staring at them like they were too naughty school boys caught doing something they shouldn't.