While ADAT is a good way to expand the number of inputs/outputs of an audio interface, it may not be the best option to combine interfaces. Unlike other options, ADAT is a unidirectional protocol that can transfer 24-bit uncompressed digital audio only one way. Besides, its limitations in clock synchronization and higher latency also make it a lousy option for combining interfaces. AVB and TSN, however, tend to be more flexible and scalable than ADAT.