In a commercial kitchen remodel , a contractor install new branch circuits
to feed the new equipment on an existing conduit with circuits from a different panel.
Can you please comment for cde requirements on this situation .
Not disagreeing with George, but you did not mention exact routing. You might check 408.3(A)3 and 300.3(B) as far as routing & terminating.
(nothing to do with the conduit itself, but they have to termiate per code also)