Rakudo HEAD as of fed46878c492186a006c7a5a8500befda962714c: <a b> X (1,2) -> [['a',1],['a',2],['b',1],['b',2]]
<a b> Z (1,2) -> ['a', 1, 'b', 2] Per S03, the second one should yield [['a',1],['b',2]]. I'd expect the two ops to flatten the same amount, regardless. Also, the above is a manual Perlification of the results; calling .perl on either gives the LTA result "GatherIterator.new()". -- Mark J. Reed <markjr...@gmail.com>