[NikhilVerma]

I don't have the same situation as you but generally when I am faced with a situation like this I often end up doing two high focus things one after another.

So when your query is running for 5 mins you can switch to something of a similar nature (another query perhaps?).

[helvetican]

I agree that having two streams would optimize my time, but my problem is with the switching. Regardless of to what, the coupling and de-coupling is an overhead for me.