Budgie meeting new budgie

[remithebudgie]

I'm going on holiday soon and I will get my aunty to look after my male budgie while I'm away. My cousin recently got a budgie and he is a boy around 15 weeks old and he will also be staying at my aunt's house while my cousin is on holiday.
So, there will be one day where our budgies will be together because we leave for our holiday a day before they come back.
Do you think they will be ok together at my aunt's house, they will be in different cages but most likely together. They can be separated though. I'm just wondering is there anything bad that could possibly happen with them being together when they have never met?
Thanks.

[Hezz]

It would be much better if the two did not meet or even be in the same room. If it is only for the one day that they overlap, is it possible for the two birds to be kept in different rooms?

The reasons for that are covered in this thread:
budgerigarsforum.proboards.com/thread/6793/important-quarantine