aws_kinesis input plugin unable to read aggregated records

We use KPL to insert data into kinesis, and we use aggregated records which has compressed data. As per the logic, we store multiple user records in single kinesis record, and the data of the record will be compressed.
While trying to read this data, using aws_kinesis input plugin and enabling decompress processor, getting invalid gzip header error and decompression is not happening.

But when I ensure the aggregation is less during insertion, i.e. when no:of user records are equal to no:of kinesis records, not seeing any issue, with reading of data and decompression is happening correctly.

Is this the expected behaviour with aggregated kinesis records??

Start with the aws_kinesis input plugin and the decompress processor, then reproduce the difference between KPL aggregated records and one-user-per-Kinesis-record input. Check how aggregated records and their compression are interpreted, and use the observed invalid gzip header failure to define the expected behavior. Done means the supported behavior is clarified and aggregated records are handled or explicitly rejected with a clear test.