Dj's - Did not Canadian National run C-Liner 'AA' engine sets? I seem to recall seeing CN AA photos while looking through a railroad history book in our local library, although that was a few years ago and my memory's not as good as it used to be.
I’m not a CN expert, but I’m sure they did, NY central would sometimes run an AA set of C-liners. They would also be seen MU’d with a variety of other diesels. I’m a Long Island RR collector and the C-liners on the island were never mu’d. They were used in east end commuter service.