I would like to catch up here as I have a similar "issue". I am also planning to run 2x U2724d monitors in future and I have already purchased one. So far I was using a U2515h as my main monitor which had 2x DP inputs (1x miniDP, 1xDP). So with that monitor it was no issue to run 2 devices (PC and notebook) and to daisy chain the second monitor.

However, as the U2724d only has 1x DP input (WHY??) I need to figure out how to get it working. I was wondering if it is possible to use one of the USB-C ports of the U2724d as the input for my notebook which supports thunderbolt output? So i would connect my PC via DP to the DP in of the first U2724d and I connect my notebook via thunderbolt to the USB-C inputs of the U2724d? Or is this only working with a U2724DE ? 

I don`t really want to spend 100€ more for the DE version ... it is a bit of a bummer that the model of 2023/2024 supports less inputs than my old U2515h which is from 2017 :(