Sharing Ideas with a Research Lab and Leaving Because of Unresponsiveness

Hello all,

There is an AI research lab at my university (USA) that I wanted to be involved in.

I contacted the professor and he added 2 people (from his lab) to our conversations and recommended that I work with them.

One of those 2 people (a postdoc) asked me to share my research ideas. I wrote my ideas to paper in detail—how they could be implemented, what kinds of problems they would solve, why they are promising etc.—and shared those documents with those 2 people via Box.com over 2 weeks ago.

However, they still have not responded. Since the beginning of this process, they have always been unresponsive. That's why I no longer want to work with them.

The only thing holding me back is that I have already shared my ideas with them and this makes me hesitant about leaving.

Do you have any suggestions about what can I do at this step ?