It is similar to a desire of low-level co-workers whom you ignored during a meeting to find an opportunity to stab you in the back later.
Adam Kokesh pleaded Benton to arrange RP interview at Russian TV (RT, which employed Kokesh.) Benton, knowing association with a foreign media to be a bad PR, refused. When Kokesh complained to others, Benton mentioned that Kokesh behaved as a clown. Kokeah did not forget.
Tom Woods expected to be part of RP campaign, but was not invited. His employment at the PAC did not achieve much. Woods did not forget.