[Discuss-gnuradio] Carrier frequency mismatching?

[Songsong Gee]

I use USRP sink and source and set frequency with 2.6 GHz
When I run a flow graph, I see like below:
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A: Flex 2400 Tx MIMO B
    r.baseband_frequency = 2604000000.0
    r.dxc_frequency = -4000000.0
    r.residual_frequency = 0.0
    r.inverted = False

A: Flex 2400 Rx MIMO B
    r.baseband_frequency = 2596000000.0
    r.dxc_frequency = -4000000.0
    r.residual_frequency = 0.0
    r.inverted = False

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Both of baseband frequency are near 2.6 G, but they do not match up
Can it be problmeatic for communicating each other?