The two teams will be playing about 850 miles apart from one another, although they have spent the build-up to their respective fixtures in the same surroundings.
Both the football and rugby union sides train at the Vale Resort in Hensol, around a 20-minute drive away from the centre of Cardiff.
Naturally, there is regular crossover at the training site when both teams are housed in the plush facilities at the same time.
Speaking at a pre-match press conference, rugby captain and hooker Dewi Lake wished the football side good luck for their contest in Liechtenstein.
Cardiff flanker Alex Mann spoke of his close relationship with Cardiff City winger Isaak Davies and his pride at seeing his childhood friend earning another senior call-up from Craig Bellamy.
“He’s been one of my best mates since I was young, so we’ve grown up in school together,” Mann said of Davies.
“It gives me goosebumps thinking about it. We were coming through and we always said to each other in class that we wanted to play for Wales, with him in football and me in rugby.
“For him to get a call-up on Sunday, he came to watch the game as well, it’s a massive honour for him – fingers crossed he gets an opportunity.
“From us being in Aberdare thinking about this being our dreams, it’s pretty surreal that we both get the chance at the same time.
“I’m just really proud of him to be honest. We’re similar people, we’ll keep our heads down, keep working hard and hopefully get opportunities.”
