Do both ends need Connect Pro to use Pro features?

I’ve just started using Connect SE, and think I’ll get Pro. But I’m wondering if the person I’m collaborating with needs Pro as well, in order to use features like Uncompressed File Transfer and Multi Channel Support? Or can their client app talk fully to my Pro app?

The free VST Connect Performer app works with both LE and Pro versions of the plugin.

Thank you Musicullum.