Any idioms? (When two persons are always together, etc.)

[Rasooljafarinejad]

Any idiom for the situation below?

1. When sth happens, and before the news reaches you it gets totally distorted.

2. When two persons are always together.

3. When you goal is achieved and you don't care about those who helped you achieve it.

4. When you wait long for somebody.

5. When a person can't do the easiest of jobs, but tries to do harder ones.

[Skrej]

Off the top of my head, I can think of the following:

#2) Two peas in a pod, or thick as thieves

#5) Perhaps ' Bite off more than you can chew' could work for this one.
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[Molly]

Six peas in a pod = Skrej, Jamie, Amy, Torsten, MrP, Ralf and the new pea in the pod, Stew.