Sequence diagram: Multiple notes/connections on the same row?

[wq2012]

Is there a way to put multiple notes/connections on the same row to make the sequence diagram more compact?

Example:

Would really love this feature!

The possible syntax could be something like:

a."note 1"
& b."note 2"

And this will put "note 1" and "note 2" in the same row.

Just that in d2layouts/d2sequence/sequence_diagram.go::placeNotes(), replace y := sd.maxActorHeight + sd.yStep by y := sd.maxActorHeight when the & symbol is detected (or something similar).