In Ableton Live : difference of volume in a track with overbridge vs group of individual track

[2or3things]

So in an Ableton project :

I got a Midi track with Overbridge (going to my master) and a group of individual tracks coming from the same Overbridge (and going to my master too) and there is a difference of 13 dB between the two.

Is that normal ? I can’t find anything in the FX Routing etc. Maybe I’m missing something.

[2or3things]

So apparetnly it’s normal, but I dont see a difference when doing the same with my Digitone and Digitakt 2.

Volume of my devices in overbridge, ableton

Are there guys who use digitakt and digitone with ableton? I want to customize my setup so that it is comfortable. but there are difficulties when setting up individual tracks with dt, the volume is too low! I don’t know if it should be like this, but I want the volume in the Ableton project to be the same as the one that plays directly from the Digitone or Digitakt. is it possible to set it up like that? Sorry for my English:)