It is not clear exactly what you are trying to do. Do you want to use the EXEF-Switcher to change presets on the TimeFactor? If so then the EXEF MIDI OUT should be connected to TimeFactor's MIDI IN. TimeFactor's MIDI RCV CH should be the same as the EXEF's MIDI Transmit channel. Unfortunately I cannot help you with the specifics of the EXEF but if you provide more details I can help with the TimeFactor side.