Will one USB-C port be able to deliver power, data transfer and power two monitors on a Macbook Pro?
Based on this post:
Can I connect three monitors and provide power to my MacBook Pro with a single cable?
Thunderbolt doesn't chain video. So you need to use 2 ports in order to display to two external monitors.
You can see the example setup here
https://www.youtube.com/watch?v=QZ-87j7bmgc