Board Thread:Warhammer 40k General Discussion/@comment-96.237.238.119-20131218020230/@comment-74.128.152.190-20140114003210

72.49.66.138 wrote: On their own yeah, but under the effects of the Synapse, they have one massive one.

Arguably the synapse could be the reverse of a soul, hence the "Shadow in the Warp" effect when a hive fleet moves through space.