There are no dumb questions except maybe those unasked! The integration you seek happens via the latest iOS IF you use the same Apple ID on the 2 devices. Passwords WILL sync between the devices, however Apps will not download automatically BUT they will be available, you just go in to the App store, then go to Updates, then Purchases, which will show all the apps you own on the ID (those not on a particular device will have a cloud icon next to them, click on the cloud to download that app to that device) you can also click on Not on this iPhone (or iPad) to show only the apps NOT on the device for easy downloading.