The Mutan Brain module shown here does not seem to have any sort of clock / run outputs, so I'm not sure it's going to work as you expect it, actually.

I'm using the Flame µQMCV for this exact purpose, having the DT midi out (sending clock & transport) in the midi in of the µQMCV - that way I have 4 midi channels sending Gate / Pitch / Velocity, as well as the "Run" and "1/16th" outputs going into Pam's "Run " and "Clk" inputs, keeping everything in sync - a quite simple, efficient and complete solution in my opinion :)

https://www.modulargrid.net/e/flame-%C2%B5qmcv