but why test you? Father knows you didn't abandon him, you shouldn't have to prove anything to him. my theory is that Deacon released you from the vault because he wanted a loose cannon going after the institute and that's when Kellog went into hiding. then the institute send gen 1s out to stop you after they realise that the wasteland won't stop you. if it was a test, why didn't Kellogg say "congratulations, you've passed" instead of forcing a showdown? everything Father does is an attempt on your life until you come face to face with him and to me it looks like a "well that didn't work, let's try something else" situation using mind tricks and playing on your emotions rather than anything else. this fits if Father is The Old Man that Kellogg refers to in the vault. another problem with the timeline is that Kellogg would have left Diamond City recently after the courser took Shaun back to the Institute or his trail would have been too old for Dogmeat to follow and Ellie would not have remembered him living there if it had been that long ago. the other problem with the "test" theory is that even if you pass, you get exposed to radiation. that would render your DNA as useless to the Institute as the DNA of every raider and scavver. it doesn't make sense for Shaun to do that if he is Father and wants you to carry on his work. whatever the truth, I love the way Bethesda leave room for each player to have their own theories and how any of them could fit into the canon (although not all at the same time)