Does This Configuration Sound Right?

I am trying to record my MIDI data from my FL KEY 37 MIDI Controller and my REV 2 Synth MIDI Controller, and my FL Studio Fire MIDI Controller. Is this possible?

I have the MIDI Out of FL KEY 37 to IN of MIDI THRU 6 device. MIDI THRU 1 (OUT) is connected to REV 2 Synth IN. I have the port of synth set to 1 for OUT and 2 for IN. Perhaps I am not using this device properly? I think I bought it by accident. I wanted something to make my MIDI connections easier. I have been troubleshooting MIDI issues for a month now and cannot get anywhere.