In my experience "contact" doesn't occur until after they've 'conditionally' offered you the job.
For a reference these days, the HR folks in praque will admit no more than the fact you worked at DXC for x years. They won't even mention good attendance or anything else for fear of litigation these days - and most firms are the same.
But when you put down your boss and one other person for the actual reference, those contacts should not occur until there is just reason to start those background checks and by then, you know you've more or less got the job.
I would have thought DXC had long since past the point whereby the management would be worried that their staff would be applying for other jobs. I would think that's a given these days.