Would it be possible to connect a Teensy 4 to an Ethernet switch without the intermediate RJ45 jack + magnetics? I'm considering connecting a couple of them (each to its own switch port of course), and I would think that for 10..30 cm of cabling + magnetics on the switch side, perhaps the extra "stuff" could be avoided?

Another way to ask is: could a Teensy 4 be wired up directly to a cable with an RJ45 plug on the end?