The response says the body is chunked.
Transfer-Encoding says chunked
The response header says chunked, so the body is read as chunk rows.
Transfer-Encoding=chunked
Content-Length is absent
The table explicitly checks that Content-Length is absent in this toy response.
Content-Length absent
The chunks carry the body length
Each chunk row carries its own size before its data bytes.
sizes are in chunk rows
Summary
Chunked transfer replaces one body length header with size lines inside the body.
chunked header checked