#It is unclear

It is not stated anywhere in the books that Legilimency was applied to fake Moody/Crouch jr. The conclusion Dumbledore made (quoted in the question) is based on pure logic, not Legilimency or any other magical means.

So unless any other canon information is available, we cannot tell.

It is unclear

It is not stated anywhere in the books that Legilimency was applied to fake Moody/Crouch jr. The conclusion Dumbledore made (quoted in the question) is based on pure logic, not Legilimency or any other magical means.

So unless any other canon information is available, we cannot tell.