2/ Is there a microchannel? Perhaps. But a Gladius MG stops after penetrating the angiographic cap. 

Here is the crossing sequence: MC across cap &gt;&gt; #HDR &gt;&gt; no tip XT into ramus &gt;&gt; angled XT into LCX &gt;&gt; CTO ‘Dottered’ with MC &gt;&gt; angled XT into LAD &gt;&gt; MC has difficulty crossing!
#HDR