A Tamagotchi can be any age to connect.
yup.
You must either: 1) Buy another tamagotchi and connect the two 2) connect with a friend's tamagotchi
Yes, but niether of them can connect to a v4.5 or a v3.
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.
As far as I know, you CAN'T connect a V4.5 Tamagotchi with a V5 Tamagotchi. That is because of the number of Tamagotchi's displayed- Since the V5 usually has 3 Tamas displayed, and all the Versions before the V5 have only one tamagotchi displayed, the cannot connect. BUT, a V5 can connect with a V5, V5.5 and a V6! The V4 can connect with all the previous versions, including the V4.5. Hope I helped! BTW (by the way) I'm sorry but there is no 5.5, and v6 can only connect with V. 5 heh........ don't you just press 'others' when u connect
Connect with other tamagotchi's or wait for the matchmaker when it becomes an adult.