What would earlier bomber transfers give Coastal Command?

What if Churchill ordered Harris to send bombers least useful against Germany to Coastal Command?

Coastal Command could gain anti-submarine capacity earlier, after range modifications. Results would depend on timing, conversion speed and German reactions, while reducing the force bombing Germany.

Sending bombers judged less useful over Germany to Coastal Command would increase the aircraft available to hunt submarines. They would first need modifications such as larger fuel tanks to obtain the necessary range. The effect depends on when Churchill makes the decision, how quickly aircraft can be transferred and converted, and how Germany responds. The direct cost is fewer bombers attacking Germany. Harris's appointment to Bomber Command in 1942 limits the period in which this particular scenario could occur. The joke about transferring much older Handley Page Heyford biplanes makes the date of the decision relevant to the aircraft on offer. Greater anti-submarine coverage remains a conditional benefit, with no fixed reduction in the length of the Atlantic campaign claimed.