You can change the names to be the same and they will be grouped by name for either sort order.
Caution, the name will be forced to initial capital, rest in lower case, and truncated to say 14 characters. And you cannot revert the name, just change it while it is on the internal.
I wish they would give you a field, at least 4 characters, that you could sort on, without losing the title. I would use it for the real episode numbers or a subtitle.
-Ken