Heine is focused on Eichel, so focused that he doesn't even think to defend against Legilimens. But when he feels Professor Eichel within his mind it's as much opportunity as opening.

The curse is a part of him, after all, no matter how much he's tried to deny it. For a moment Eichel has free reign. Then there are footsteps behind him as he traces whatever memory he wants to find. The sound of padding feet is audible, accented with the odd clicks of something on stone floors.