Probably he wanted to be in good terms with Hitler and get it closer to attack the USSR. Chamberlain had a very antisoviet stance (even in contrast with other c

Probably he wanted to be in good terms with Hitler and get it closer to attack the USSR. Chamberlain had a very antisoviet stance (even in contrast with other cabinet members) and maybe he reasonably thought Hitler would not overextend by also opening a west front. In that line of reason, having Hitler in the government and not disturb it with a coup was a positive for him.