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BQ27621EVM-G1 new board, no activity.

Other Parts Discussed in Thread: EV2400, BQSTUDIO, BQ27621-G1
Everything is set up exactly as shown in this doc
Everything is new out of the box, the cells attached are charged.
The studio seems to work ,comms with the EV2400 look correct,  but it does not see any devices attached to the EV2400.
(no devices detected)
I have two of these board and they both do nothing.
Not sure where to go from here, everything looks right, but both the EVM boards are inert.
Did I miss something?