We know that Peter and Elias were somewhat civil enough to make bets with each other which could lead to Peter running the Institute and marking Jon with the Lonely.

Was this peak of their civility and socialisation through the bets? Or was this the bare minimum lower than usual level of their comradeship?

Were Peter and Elias canonicaly begrudging allies? Of friends? Or something more?

We don’t know. We will never know. There is enough blank space to fill and make all your headcanons technically canon compliant <3