Can you mix Ativan and Benadryl in the same syringe?

Benadryl is incompatible with Haldol, do not mix.

Compatibility is unknown between Benadryl and Ativan, do not mix.

Ativan is compatible with Haldol, ok to mix.

To prepare and serve a B52=Haldol and Ativan in one syringe, Benadryl in another.