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Could you please specify where have you found about this mislabeling? Because in other places, like this from official arduino website, i find projects telling to connect Rx-Tx, Tx-Rx:https://create.arduino.cc/projecthub/miklas/weather-station-based-on-arduino-and-nodemcu-e2533a
There is an obvious mistake on connecting ESP8266 to the Arduino. It says connect RX to RX, TX to TX. It should be RX to TX and TX to RX.