The MPPT only has a single data port so you can only have a single device connected to it. The pluggable only works with some of the larger MPPT's, it doesn't work with any of the smaller ones.
Of course if you have Bluetooth you can read it all over the boat. Another way to go would be to connect the MPPT to a Cerbo GX and then your monitoring takes on a whole new dimension because you can at the same time view all your other Victron devices and see how they are working together as a whole, and you can view it on Bluetooth or Wifi all over the boat.