In French, we read that witnesses should be invited to submit their "written testimony and/or recommendations to the committee [so we'll be able to read them] for inclusion in the final report."
If all that people write to us can fit into 150 pages, I imagine that Mr. Allen's intention is not that this should be included in the report. Our researcher goes through exactly the same exercise when people come to testify.
We too will read these written testimonies. In our discussions, when we report on them, we'll be able to say that such and such an element contributed by such and such a witness can be integrated in the report, even if this witness didn't actually testify, since we'll have his written testimony. Then the recommendations can arise from them.
Do I interpret the nature of the motion correctly?