Some flights may require a 3rd pilot. Some may not.

A few years ago TC changed much of their crew rest rules and one of the more positive changes was including considerations for time of day. A trip over the ocean starting early evening, going to a short destination can be done often with only two pilots. But if you're leaving later, or going further it can trigger the 3rd pilot. I would guess when it comes to XLR flying there will be a mixed of non augmented and augmented flights.