First, both are asadora dramas. The story and heroines have similar vibes. Their ambitions are completely different but they have a similar path. Both are also partly set during WWII. I don’t want to give away anything else, but I highly recommend both.
These are both asadoras based on actual women. I read the biography about Muraoka Hanako, which served as the source material for "Hanako to Anne." Hanako actually met Hirooka Asako (renamed Shirooka Asa for "Asa ga Kita") and she served as an inspiration for her. For this reason, I think these asadoras complete each other nicely and they are both 10/10 for me as well.
In both dramas the female lead is an interpretor.While Hanako to Anne is set in old Japan Les Interpretes is set in modern France/China
In both drams the female leads are interpreters. 'You drive me crazy' shows the practical problems of an interpreter like interpreter could not even eat during a job and is more inclined towards romance.
Both are historical asadoras with strong women leads who have to fight for their chosen careers.
Both span a few decades and focus on a few generations of a family.
Both have strong female friendships that stand the test of social standing, time and lifes hardships.
Both have WW2 as a big turning point and they don't sugar coat the harsh reality of the time, while leaving the viewers hope for the future.
First, both are asadora dramas. They are set during the similar time periods (early 1900s to early 1950s, though Oshin goes on to the 80s). Both FLs are daughters of sharecroppers and the dramas show how harsh that life can be. Hanako to Anne, however, is portrayed more happier than Oshin.