Coverage on the former starts at 1.15pm GMT ahead of 2.15pm kick-off time, while the latter begins coverage at 1.30pm GMT.
Welsh rugby has been on the slide of late, though they will hope for a boost following the end of the Warren Gatland era.
Matt Sherratt takes interim charge but has it all to do in Cardiff today when the rampant Irish come to town.
The current champions sit top of the table and look on course for a remarkable third title as things stand.
Wales today host Ireland as the Six Nations returns.
