ADRV9008-1 2-Channel Time Domain Data

We used an RF splitter to inject the same signal in to both RX1 and RX2. We were expecting the displayed time domain for RX1 and RX2 to be locked to each other, but it appears the data for each ADC is collected at a different instant in time. Is this correct? Is there away to configure the evaluation board for dual channel coherent signal collection?