bit confused about the function in pipeline

I thought the point of the function in the pipeline should disseminate datat to a line of a function at a time.
Quite possible that I am doing something wrong here, but
BANNER
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bi
PL/SQL Release 10.2.0.4.0 - Production
CORE     10.2.0.4.0     Production
TNS for HPUX: Version 10.2.0.4.0 - Production
NLSRTL Version 10.2.0.4.0 - Production
create type virtual_table_type as table of number;
create or replace 
function virtual_table (p_start number, p_end number) return virtual_table_type
 pipelined as
   
begin
    for i in p_start..p_end loop
        dbms_output.put_line(' returning row'|| i );
       pipe row(i);
    end loop;
     dbms_output.put_line('done...');
   return;
    
end virtual_table;
begin
    for x in (select *
              from table (virtual_table(-2, 2)))
    loop
      dbms_output.put_line(' printing from anonumous block '||x.column_value);
    end loop;
end;
Why am I
 returning row-2
 returning row-1
 returning row0
 returning row1
 returning row2
done...
 printing from anonumous block -2
 printing from anonumous block -1
 printing from anonumous block 0
 printing from anonumous block 1
 printing from anonumous block 2
and is not
returning row-2
printing from anonumous block -2
 returning row-1
printing from anonumous block -1
returning row0
printing from anonumous block 0

and so on

Put it cannot be guaranteed if it is 9i or 10g, when you use features of double pipe. Oracle will determine when the data is ready. It will be more obvious if you test with more data than just 5.

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