Joining Node Data to Conversation Query

I'm attempting to grab a snapshot of conversation data in SWQL Studio and am having some problems linking the data back to a node (so I can run the query on a per-customer basis).  Here's what I have so far:

SELECT ConversationID, IPSort1, IPAddress1, HostName1, IPSort2, IPAddress2, HostName2, NodeID, InterfaceID, TotalBytes, TotalPackets, TotalBytesIngress, TotalPacketsIngress, Conv.OrionSite.Uri

FROM Orion.NetFlow.ConversationsTop(Filter='NSF:TD:2013-10-16T09:00:00~2018-10-16T10:00:00,1,True,True', Limit=500, TopKey='') AS Conv

ORDER BY HostName2

Unfortunately, the NodeID always returns null, so I can't join on that, and I don't see anywhere else that identifies which node is providing the conversation data.  Any help would be appreciated.