Out of curiosity, why can't the sensor be shared?

I always wondered on stuff like this.. since the input of the ECU is high impedance, and the input of the MS ECU is high impedance, wouldn't 'tapping' in to the sensor be similar to putting a volt meter on it?

I guess the problem is the ref voltage, since you can't really tie the ECU's 5v ref to the MS 5v ref, etc. Maybe I answered my own question.

Either way, not worth the headache, just curious why. Thank again.