ADC chip signalling - ADS4245
The AD4225 is 14 bits but only 7 output lines are provided with (say) D0 and D1 being multiplexed for the LSB line. Just because it is LVDS doesn't mean there is something "odd" about the outputs. Read page 13 of the data sheet.

The AD4245 is set for CMOS mode and you get all 14 bits (for both channels) outputted simultaneously. Read page 15.