TC375 Adding Serial Ports

Is there a way to add an extra two serial ports to the TC375? With my Adafruit Grand Central M4 SAMD51, I can use the SERCOMs to create additional serial ports. I'm wondering if something like that can be done with the TC375? The ports need to be able to easily handle 115200 baud. I'm trying to switch from the Grand Central M4 because I REALLY like the ShieldBuddy's processing power, three cores, and stability, but I need lots of serial ports on my robots.