YES!

This is how (and why) MIDI Channels map to individual parts, via the "tracks" of your Timeline in a MIDI Sequencer.

That which is explicitly sent to MIDI Channel 1 is only received and voiced by a Part listening on Channel 1, as is the case for Channel 2, etc.

So you can send different notes to different parts via differing use of Channels per MODX Part and Sequencer Track.

Initially, some sequencers, out of the box, send to what's often referred to as "OMNI" which is a euphemism for sending to ALL of the MIDI Channels at once.

This is most often (nearly always) the case with how the iPad synths and sequencers work, out of the box.

Many DAW sequencers somewhat default to an OMNI send from new MIDI tracks, or to nothing. Each is infuriating to configure and get reliable and stable and predictable in its own unique ways.

There is no "plug and play" DAW.

One of the promises of MIDI 2.0 is that messaging will be query and answer capable, so devices and sequencers will (hopefully) be able to configure each other at some point in the future.

Until then, it's a lot of work, and not fun, learning about how each DAW and Sequencer does its mappings for both listening/recording and playback. These are very different things. Push and Pull, so to speak.

MODX/Montage map (automatically) each Part sequentially to MIDI Channels 1 through 16.

So Part 1 is MIDI Channel 1, 2 is 2, etc.

In your preferred Sequencer, you can make any track play to any individual Channel. It doesn't have to be this strict in the Sequencer, but for visual consistency and navigation it's often easiest to map Tracks 1 through 16 to MIDI Channels 1 through 16.

You can (in most sequencers) also set a Track to send to multiple Channels at the same time, so that you don't have to have multiple copies of a MIDI track if (for example) you're playing a four Part piano Performance and want all the notes to go to all 4 Parts.

Unfortunately, most sequencers label this facility oddly and uniquely from others (mirroring to other channels from a single track) and provide it in different forms. And some don't provide it, expecting unique tracks for each channel.

[quotePost id=117563]Many DAW sequencers somewhat default to an OMNI send from new MIDI tracks, or to nothing. Each is infuriating to configure and get reliable and stable and predictable in its own unique ways.

There is no "plug and play" DAW.[/quotePost]
You keep pretending that your uneducated opinions reflect somehow an objective reality. They're not.

Yet I'm continually entertained by your...

[quotePost id=117570]objective reality.[/quotePost]

If the sequencer is sending the same sequence. you can go into advanced midi settings on the Montage/Modx and change the channel settings to single midi channel whatever channel the sequencer is transmitting on.

If its a multi track sequencer, then make sure to leave the advanced midi mode in multi and place your 2 Montage parts on the tracks corresponding to which ever midi channels the sequencer is transmitting on.

If using a DAW, there are additional tricks you can here depending on the DAW involving midi channel mappings. You would go sequencer into the DAW and then in the DAW assign the sequencer to the Montage tracks (wither independent tracks in Multi mode) or 1 track (in single mode). There is also a hybrid midi mode which has some other benefits here. If using hybrid mode you can place several Montage/modx parts to receive a certain midi channel all together (Keyboard control must be on for those receiving parts) , but then add other Montage parts that when not under keyboard control, can be played live over the top and they are fixed to their respective channels where they are placed. Here is how the Yamaha manual explains it

When MIDI I/O Mode is set to Hybrid:
Receiving MIDI Data
• MIDI data received via the channel that is set in the MIDI I/O Channel parameter is received on Parts with Keyboard Control
Switch set to ON.
• MIDI data received via a channel other than that set in the MIDI I/O Channel parameter or on Parts with Keyboard Control
Switch set to Off, is received via the corresponding Part.