Topic: Aggregate devices in apple

Hi there,
Does anyone have any experience in aggregating the UFX with the motu Traveler? Ive tried many ways of configuring it but if i choose the traveler as the clock source i get weird sound from the ufx, if i choose the ufx as the clock source i lose my timecode. Both the traveler and the ufx are clocked with an apogee big ben, but there is no way to select that as clock source.