No problem there is no noob questions, just questions, and these are interesting
You are perfectly right for the midi to CV interface, and in fact, you can use a synth to do that only if the synth by itself has a midi to CV converter. For example the Moog Grandmother and the mother 32 have one, so you can send some midi informations to the DFAM through them.
I'll try to explain:
When you use a synth as a midi to CV converter, the synth itself become a carrier. So, if you send for example some midi notes, these notes will be converted to CV for the destinated via the carrier device of the signal. So if you send your midi notes to the DFAM through your synth with midi/CV converter, both units will received the message and you'll hear the two synth in sync. So it may not suit all situations.
If you want just to hear the DFAM, you'll have to shut down the volume of the other synth...
It's probably usefull in a DAWless situation.
For DAW studio setup, I think the best is to have a midi/CV converter for the DFAM only, in order to send via the DAW directly all the notes without 'perturbating" anything else. With this you can use your other synths independently.
The other benefit of this method is that you can use the CV of your matrixbrute for modulate the DFAM via the device itself with CV cables.
The main problem of CV is that you can send one information at a time via one cable. It's not like midi, that you can send multiple informations with multiple midi channels. If you want to do the same with CV you'll have to have several CV output and some cables. (A multi cable can do this also but it duplicate the same signal in multiple outputs.)
Concerning the PRO3 and the Matrixbrute, i'm not sure, but i checked the spec and i don't think they have a midi to CV converter. They have both CV inputs & outputs so you can modulate the DFAM via eurorack cables, but i don't think you can send midi through them.
For Resume, with a Midi to CV converter you'll be able to SYNC your DFAM via midi messages with your DAW, but not modulate it. You can modulate it with your other CV synths. And indeed it's pretty limited...
DFAM is a very good and well sounding synth, but the fact that moog don't implementated midi in it, can cause a lot of headache in order to sync it with a DAW!
Here is the best video i found in order to sync it with a DAW. In this video the person use a keystep, but i prefer using a SQ1 because it has more Gate outputs and it is cheaper and take less space on the desk.
If you have difficulties to sync it with the SQ1 , don't hesitate to send me a message and i will help you
Another video showing how to convert the DFAM to an instruments with a beatstep pro:
Another good way to sync the DFAM, but only with ableton live and a compatible audio interface: