BiDirectional DShot wiring

Good morning. Building a Hexacopter. I am using x6 Holybro Tekko F4 45A ESC’s (AM32). I am using a Holybro Pixhawk 6X flight controller. I am at the point of making my power & signal wiring connections between the ESC’s & the FC. I want to use Bi-directional DShot to help with notch filtering / tuning. Can someone please confirm that I need to connect (for each ESC) only the ground (-ve) between both and the signal wire from the FC’s signal pin to the ESC’s RX pad?
The ESC’s TX pin is not used for BDShot telemetry?
Many thanks
James

Check this page :

https://ardupilot.org/copter/docs/common-esc-telemetry.html

But you are right , if you use bidirectional dshot you dont need the extra wire ….

Only ground and signal / and setting up the correct params for dshot of course …

Also check your firmware version has bdshot support …

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