Mixing HEXs

I'm sorry as I no doubt think that this question has been asked before but I'm rushing off to work and I would like to know the following (pretty please)...

Can you mix HEXs? I.e. Can I have 1 Alpen Light and 1 Weetabix? Not literally mix them together, lol, but I'm sure you get what I'm saying Or... 125ml of Semi and 1 BabyBel?

Any help is mucho appreciated

Yes you can!

Yeah I do that quite a lot, I use my skimmed milk with bran etc but only really to soften it so I make up by having a bit of cheese or other HEXA. Same with the B's, you could have one alpen light and one weetabix or half of the other HEXB you want.