Not sure how to use the 'own' parameter. End result is that on the python side when the ndarray 'flags' are printed, I see: OWNDATE: False The returned array on python side is garbled (though works ...

Likewise, converting to a numpy ndarray from a Pyarrow ListArray type is tricky, as described in #35622. That issue describes trickiness with FixedSizeListArrays, but the same is true of ListArrays, ...