Pull-up scheme for Hall effect sensors on a BLDC
The spec says...

4.5V min for Hall sensor so you can use 5V and open collector may  pull-up to your 3.3V. I don’t understand open collector and 6.3V floating. Unless that is simply stray leakage voltage from 24V Motor supply with 10M probe. Using 3.3mA to 3.3V with 1K will absorb any stray leakage and possibly 10K as well.