How to get wifi with teensy 4.1?

Is there a way to use the “WiFi Module - ESP8266” with the Ethernet header on the Teensy 4.1? or would connecting a wifi adapter to the Ethernet adapter be better? im wanting to do OTA firmwear updates to the Teensy but it doesn’t have wifi built-in.

Consider checking and/or posting on the Teensy forum at PJRC.
For example