1. a digression; an aside
    • 余談はさておき当面の問題を検討しましょう
    • So much for digressions. Let's get back to the question at issue.
    • 彼の話は余談に渡った
    • He digressed [wandered] from the main subject in his talk.
    • 余談ですが,彼は料理の達人です
    • Incidentally, [I may add that] he is an excellent cook.
    • これは余談です
    • This is 「by the way [just an aside].