Daisy Chain two Dell monitors using USB-C to Displayport - MacBook Pro 2017

I tested the exact setup on a MacBook Pro 2017 with Sierra and, after an update, also High Sierra.

It did not work. The two monitors will mirror each other and not extend the display.

I don't know why it does not work - Apple says, that the following MacBook Pro's support MST (Multi-Stream-Transport). Taken from this official apple documentation

• MacBook Pro (Retina, 15-inch, Late 2013) and later
• MacBook Pro (Retina, 13-inch, Early 2015) and later

I have read other places that other users have the same problem. I am guessing it is a software/driver problem as it works with a windows pc and other users have reported that it works on a mac running windows.

Actually, the 2017 Macbook Pros when used in conjunction with the OWC Thunderbolt 3 dock worked for me. I connected two BenQ monitors with that dock and got the two monitors plus the MBPs screen to come up as separate entities. No work required. Used a Display Port to Thunderbolt (USB-c) cable and a Display Port to mini-Display Port cable. The thunderbolt connector and mini-DP connector were both plugged into the Thunderbolt 3 dock and the dock was plugged into one port on the MBP.