There are tools to separate the faces in different yaw angles, placed in different folders.
The more the bins setting, the more folders are created.
I would sort by yaw angle both for A and B, every folder with its own alignments file. And then I would train the same yaw angle folder, the one for A with the corresponding one for B. And I would repeat for every yaw angle folder that would match A and B until I would have all my faces trained.
Would it help for speed, quality, detail... any of these variables, to train those different folders, compared to train all in one folder?