U2723QE, P2721Q, Intel NUC, daisy chain?

First, tell us all of the available video out ports on the Nuc.

NUC 11 - I think I got it, both with 4K 60 Hz:

Thunderbolt USB-C plug - Cable USB-C to DP - U2723QE DP 1.4 plug

U2723 QE DP Out plug - Cable DP to DP - P2721Q DP plug

In any case, with Lenovo Thinkpad T14 Gen 1, I did the following:

Thunderbolt 3 USB-C plug - Cable USB-C powered - U2723QE USB-C 90W

U2723 QE DP Out plug - Cable DP to DP - P2721Q DP plug

But this time, I only get 4K 30 Hz in both monitors.

What do you think I'm doing wrong?

Thank you

The fact that you got both monitors working at 3840x2160 60Hz on the NUC tells us that the 30Hz "limitation" is on the 2020 Lenovo Thinkpad T14 Gen 1. Maybe ask the users on a Lenovo Forum. When connected to the Lenovo Thinkpad T14 Gen 1, try backing down the resolution on the P2721Q to 2560x1440 60Hz. Then see if the U2723QE allows 3840x2160 60Hz.

I did that, and it actually allows U2723QE 4K with 60Hz, but this way I only get full-HD 60Hz on the P2721Q. The maximum available resolution  is 1920x1080 on "display dapter properties - list all modes". Do you have other solutions that I could try?

Thank you