Nuclear weapons remain unlikely by 1942

Could any power have nuclear weapons by 1942 in this delayed-war scenario?

Probably not, because the historical bomb required the combined resources, expertise, and urgency of several national programmes.

The historical Anglo-American effort combined contributions from several national programmes with a very large concentration of resources. Continued peace allows scientific work to progress. It does not necessarily create the same organisation, funding, or urgency needed to produce a weapon by 1942. The forecast therefore rejects an automatic nuclear shortcut to the war's outcome.