You got me thinking on this one.
Did the engineer do this to help lessen voltage drop?
If so and the conductors are 1/0 or larger you may be able to tie them together at the panel and land them on one breaker.
This would still be a ring circuit but would avoid the parallel breaker problems.
These ring circuits are a controversial subject some will argue it is nothing more than parallel conductors and others argue it violates 300.3(B).
Good Luck, Bob
