Dell U2715H UltraSharp 2560x1440 Using 2018 XPS13 - 9370

Yes, but you'll only be able to run one of them.  You might be able to get a second display running at 1080p resolution, but that would be it.  The official specs of the WD15 indicate that you can only run a single display when using 2560x1440p resolution.  If that's not enough for your purposes, the XPS 13 9370 supports Thunderbolt 3, which means it can also use the TB16 dock.  Whereas the WD15 can only do dual displays up to 1080p or a single display at 2560x1440 since it only uses regular USB-C, the TB16 that uses can do dual displays up to 4K and even some triple display configurations because the TB16 uses Thunderbolt 3, which means it has access to 4x more display bandwidth than the WD15.  I wrote a detailed post about how this all works here if you're curious.