It is intriguing and mysterious, too!
However, what I find most intriguing is the "Homosexual" atmosphere? It's there, particularly, between Oscar and Max? There seems to be an attraction that runs, deeply, between the two? Somewhat like "An Older Man With A Younger Man" relationship?
Is it accidental or is it deliberate?
I felt the same way during "The Sherlock Drama" between Sherlock and Dr. Watson?
A subliminal intrigue where one is older; one is younger and the intertwining between the two?
I have begun to notice this subliminal Homosexual Tone in most of PBS Dramas?
Absolutely, within "Downton Abbey"!