It is a major political issue in less important countries how many minutes and seconds the president of the US talked to their president in the hallway at G7. In Spain, for example, people are going nuts today, calculating the length of time Pres. Biden gave to Pedro González in the hallway and trying desperately to figure out what it all means.
This is why Putin hates America. He wants to be the person everybody lines up to talk to at the G7. He perceives it as extraordinarily unfair the US should play that role. Once you understand that, everything he does becomes very clear.