What If You Didn't Go To The Vault Before The Nuclear Strike in Fallout 4?

Have you ever wondered what would happen if, before the nuclear strike, you didn't go to the vault at the beginning of Fallout 4 but instead wandered around Sanctuary Hills? I decided to test it out. So, I started a new game, created my character, and waited for the Vault-Tec representative. When he arrived, I also wanted to see what would happen if I watched TV and didn't open the door for him. Surprisingly, the TV just played the same news repeatedly with no changes, but at least, you can spot a reference to Fallout 76. After a while, I opened the door, provided all the necessary information, and began waiting for news about nuclear explosions in the United States. Upon hearing the required information in the news, I simply sat on the couch and continued waiting.