Board Thread:Questions and Answers/@comment-31625365-20170329135349/@comment-26377724-20171023075531

Hum you're correct (maybe i should rewatch the series that make a long time i haven't seen it)

When suzuha leave in the failed attempt she says she will deliver the IBN herself (25 years for her but in a few hours for the lab) So she knows the IBN is missing at this moment and she tried to overcome the attractor field convergence and failed to do that, at this moment it's another proof of the existence of attractor field convergence that will guide kurisu to make a plan to retreive the IBN with D-Mail.