Chris
You were probably not on the BCal DC10 which, unless old age is catching up on me, only had one tiller.
I seem to recall the same on the ANZ DC10.
Did any DC10 operator have a 2 tillered version.
On the HS748, we had some with 2 tillers and some with 1.
I used to give all the sectors to the first officer if we had 2 and did them myself if 1.
IIRC there was one more a/c with 2 than with 1.