However, it falls slightly short of the 96 W "required" by a 16-inch MacBook Pro (although the machine rarely sucks up that much power). Will DisplayPort over USB-C provide the same level of performance and features as the standard DisplayPort connection?

Rewards:Rewards are earned on Dell purchases (excluding Dell Outlet purchases and third party products) made on dell. The Alternate Mode feature must be supported on the PC's hardware and software, and the connected device or dongle. While HDMI is a more common port found on most TVs, DisplayPort offers superior visual quality and performance.The HDMI Alternate Mode lets you project video and play audio on an external display that supports HDMI. The raw throughput and supported resolutions depend on the DisplayPort standard being used (at this stage, it's likely 1. Chargers that don't have a standard USB Type-C connector might use a proprietary, nonstandard connector that your PC (or phone) doesn’t support.

There's a driver in the device you connected to that isn't supported in the version of Windows 10 Mobile your phone is running.

IDC Whitepaper: “Optimizing Performance with Frequent Server Replacements for Enterprises” commissioned by Dell Technologies and Intel, March 2021.