Does DuckDB just delegate the query to S3 Tables? or does it do anything in-engine with the data files? On thing that's missing in DuckDB is predicate pushdown

Does DuckDB just delegate the query to S3 Tables? or does it do anything in-engine with the data files? On thing that's missing in DuckDB is predicate pushdown for iceberg - see https://github.com/duckdb/duckdb-iceberg/issues/2 https://github.com/duckdb/duckdb-iceberg/issues/2 Which puts it way behind the competition, performance wise.