Why capital ships still slow escort production

Could Britain build capital ships and escorts at the same time without slowing escort construction?

Both could be built in parallel, but capital-ship work would inevitably reduce how quickly escorts could be produced.

The answer rejects a false choice between building only capital ships or only escorts. Britain could keep both programs active at the same time. That did not make the two efforts free of competition, because heavy-warship work still occupied capacity that could otherwise accelerate escort construction. The useful distinction is between parallel production and producing both categories at their maximum possible rate.