310.15(B)(2)(a) Exception No. 5, and especially the last paragraph is the answer.
As a side comment, 310.15(B)(2)(b) - - - Spacing - - - shall be maintained.
It has been observed in earlier Electrical Magazines that the minimum spacing of Conduit(s) etc. is determined by the minimum spacing between the conduits secured by locknuts and bushings to boxes etc..
Maybe such thoughts could apply to MN cable.
