BUG: DatetimeIndex.get_indexer(timestamp[pyarrow])

[jbrockmendel]

Pandas version checks

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• I have confirmed this bug exists on the latest version of pandas.

• I have confirmed this bug exists on the main branch of pandas.

Reproducible Example

dti = pd.date_range("2016-01-01", periods=3)
arr = dti.astype("timestamp[ns][pyarrow]")

>>> dti.get_indexer(arr)
array([-1, -1, -1])

Issue Description

i suspect the problem is in is_comparable_dtype.

Note this is the underlying issue behind #61231

Expected Behavior

dti.get_indexer(dti)
array([0, 1, 2])

Installed Versions

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