Process large JSON stream with jq

I get a very large JSON stream (several GB) from curl and try to process it with jq.

The relevant output I want to parse with jq is packed in a document representing the result structure:

{"results":[    {"columns": ["n"],      // get this"data": [            {"row": [{"key1": "row1", "key2": "row1"}], "meta": [{"key": "value"}]},        {"row": [{"key1": "row2", "key2": "row2"}], "meta": [{"key": "value"}]}      //  ... millions of rows            ]    }  ],"errors": []}

I want to extract the row data with jq. This is simple:

curl XYZ | jq -r -c '.results[0].data[0].row[]'

Result:

{"key1": "row1", "key2": "row1"}{"key1": "row2", "key2": "row2"}

However, this always waits until curl is completed.

I played with the --stream option which is made for dealing with this. I tried the following command but is also waits until the full object is returned from curl:

curl XYZ | jq -n --stream 'fromstream(1|truncate_stream(inputs)) | .[].data[].row[]'

Is there a way to 'jump' to the data field and start parsing row one by one without waiting for closing tags?