As far as I know, Konoha Shinden was never truly confirmed to be part of the canon timeline, but please correct me if there has been an official statement at some point.
Konoha Shinden is in fact canon and actually takes place immediately following 700. The mission that Mirai mentions about escorting Kakashi is actually what leads to the novel, and then there’s a moment in the epilogue where Kakashi is talking to Naruto about the stuff with Sasuke that’s going on.
[screaming externally] 