I decided to do some egg connecting and I noticed these things:
Observations
1) How to do it: You may already know this and I did not discover this, it was discovered by violet and/or nazochi. This is really a factory test to check that all of the pixels, buttons and connections work. To try it out yourself do the following. However, if you try this, you will lose your generation number so I suggest you use a low generation number Tamagotchi. Press a, b, c and reset all at the same time. You will hear the reset beep. Look at the screen. All of the icons and pixels are firing. Press a (you can't press any other button in the whole of this process unless mentioned) and you will see half of the pixels and icons iluminated, press b and the other half will iluminate, press c and the pixels that border the screen will fire along with the icons. Press a and you will see your version of tama. My ConneCTion was a version 4.2 and my ConneXion is a 2.1. Press a again and you will do a ROM test. Then it should say ROM OK (if it doesn't, bad news) and then press a again to do connection. If you press b it will repeat the ROM test. However if you fail the connection then press b. I don't remember how I did this but I pressed a or b when my egg and character were playing a game and it said 693 Hz which is a frequency. Connecting frequency I suppose.
2) To play a game, just connect randomly, well, differently from the next point. On the normal Tama, your character will set off and play a game and most probably lose. It generally only wins when it is supposed to visit the egg. I noticed this. The egg will just keep on the screen the "GO!!!" with the blob character holding up the flag. At the beginning it will play the music you get when you get to 30 hurdles on your Tama (when you win basically). If you press the middle button it will go to a normal egg screen bobbing in the middle and then you just have to set the time, your birthday and the egg will hatch. I have noticed though that when I tried this before I registered on Tamatalk on my ConneCTion, it just said in italics SLEEP.
3) To connect and make the egg come to your screen, press the connect/proceed button on the egg and press rapidly twice the button on the other one and your character will wobble normally at the bottom of the screen. The egg will stay at one side of the screen. After ten seconds it will go to the middle but if you press buttons continuosly on its side it will stay at the side longer. When the egg goes visiting it will come down like an egg and then turn into a cross Puchitchi, then into a girl in an egg with the sunabove because a present has been given and it will float off as a hatching boy. Then your Tama will receive the present. If you go off to visit the egg the egg will stay at the wrong side of the screen wobbling and your Tama will play a game and most probably win! However, when your egg has been at the side of the screen, and you press b, the time scrolls on rather than appear automatically and you have to press A+C to set. The date here is 0/0 but if you scroll through you will never reach 0 again but will go straight onto 1. The same thing happens with the birthday. The egg never hatches either I have noticed.
I am now planning to mate my egg with my V2 2 when it turns into an adult. So far they have 4 little faces!!!