Can there be multiple streams in "directStreamIds" when fetching ids only for reading-list?

[Gaurav]

I figured that there can be more than one streams in "directStreamIds" if input contains multiple "s" parameters. As mentioned here: https://groups.google.com/forum/?fromgroups#!topic/fougrapi/eycrBYBaMjc%5B1-25%5D

But, if the input is a single stream (i.e. parameter "s" is NOT repeated) like "s=user/-/state/com.google/reading-list", can "directStreamIds" still ever have multiple streams?

For example: https://www.google.com/reader/api/0/stream/items/ids?s=user/-/state/com.google/reading-list&xt=user/-/state/com.google/read&r=n&n=1000&nt=1344929364&ot=1342244471&includeAllDirectStreamIds=true

I've not seen multiple streams in above scenario but just wanted to confirm that it is the expected behavior.

Thank you!

Wiki: http://code.google.com/p/google-reader-api/wiki/ApiStreamItemsIds