Churchill and Mountbatten reinforced each other's ambitions

Was Mountbatten simply a yes-man for Churchill?

In this interpretation, both men developed ambitious visions and encouraged each other to expand them, while paying too little attention to objections about implementation.

In this interpretation, Mountbatten had his own ambitions and ideas. Churchill shared that appetite for large schemes, so their collaboration encouraged each to propose more than the other. The danger lay in expanding an operation without listening to those who questioned how it could be carried out. Operational objections went unheard as the two men reinforced each other's plans.