ok what is everything else? your opinion that is a sensible and RAW interpretation you havent given my ANY textual support to suggest you can do both a swift and an immediate in the same round...
1. The introductory passage of page 7 states "During a
normal round..." That means there are exceptions.
2. The definition of a round, as given in the PHB is like that of "a week" - it can either mean "Sunday to Saturday", or it can mean "from now until next Friday". So, a round can mean "from the top of the Init order to the bottom", or it can mean "from my turn until my next turn".
The descriptions given for Swift and Immediate actions, then, clarify how #1 and #2 work out in practice. In particular:
#3. "If you use an immediate action when it isn't your turn, you can't use another immediate action or a swift action until after your next turn."
and
#4. It does
not say that using a Swift action prevents you from using an Immediate action immediately after your turn ends.
So that's it. In the normal case, either:
A. On your turn you'll use a Standard, Move, and Swift action (or some other allowed combination)
OR
b. You'll use an Immediate action when it's not your turn, and then on your turn you'll use a Standard and Move action (or a Full-round action).
But there is a corner case where you use your full set of actions on your turn (per A) and then
before the end of that round you find the need to use an Immediate action. And that's allowed - that just means you've used up your Swift action for your
next turn. (It's allowed because of #3 and #4, and it fits with #1 because that means it's no longer a
normal round.)