Owie, YOU ARE A WINNER!!!
It is also possible to read the internal hall effect sensor via ADC1 by calling dedicated function hall_sensor_read(). Note that even the hall sensor is internal to ESP32, reading from it uses channels 0 and 3 of ADC1 (GPIO 36 and 39). Do not connect anything else to these pins and do not change their configuration. Otherwise it may affect the measurement of low value signal from the sensor.
Though, I still do not consider the touch sensors as hall effects over capacitive touch sensors and good luck to you in getting them to work as much else..