You must either: 1) Buy another tamagotchi and connect the two 2) connect with a friend's tamagotchi
A Tamagotchi can be any age to connect.
yup.
YES you need 2 tamas (same version) and press the connect button ect.
Yes, but niether of them can connect to a v4.5 or a v3.
no
Sadly, no. But V5 can connect with V6 (music star.)
You can't connect to another tamagotchi online you must connect in person. Other people on websites such as TamaTalk have researched this question, and have guessed that you might be able to connect online in the future.
only if one is an oldie or both
you I.R. connect it
Yes.
Yes.