Best bottles are the kind you can do paced feeding with: Narrow neck, slow flow teats. Brand doesn't especially matter. Tommee tippee is fine. All the ones that claim to be more like a breast are just marketing - it doesn't make any difference.
I never found any particular dummies to make a difference. Your baby might have a preference for a particular shape.
I think nipple confusion is a real thing but quite rare, and probably more likely if you aren't paced feeding, and/or if baby is already having some trouble at the breast.
Breastfeeds can be variable in time spent - what you'll find is there are different stages of a feed. Baby starts off doing lots of quick gulps, which then slows down into long, slow swallows. For a newborn this sounds like "Schnuck schnuck schuck" after a while it will really tail off into a kind of fluttery, on/off, loose, sleep/feed/sleep/feed thing. If you just leave them, they can easily be attached for an hour or more. It's absolutely fine to leave them on, and it is beneficial to. They are continuing to get milk and stimulate your supply while doing this, just while not expending many calories, which is absolutely great. But if you particularly need/want to get up and do something else, or put the baby down so you can go to sleep, it's also fine to do that when they are in this feeding stage. Sometimes you see sources that say you must always allow them to finish it, which isn't true, and sometimes you see this referred to as "non-nutritive sucking" or referenced that it's completely pointless/ "just for comfort" - this isn't true either. So it's best to let them do it at least some of the time, but it is also not likely to cause problems if you interrupt once they're in this stage some of the time. They don't always get to the fluttery stage - sometimes they come off and continue rooting, in which case you can offer the other side (even if they've already fed from both sides, just go back to the opposite side and repeat). Sometimes they come off and are perfectly happy and alert, that's OK too.
It doesn't really get faster as such as it's so variable to begin with. A feed could be 5 minutes or 50 and that could change over the course of a day, let alone a few weeks/months. Breastfeeding is less predictable than bottle feeding, but the flip side of it is that it is more flexible. If you need to interrupt a feed, then you can simply feed them earlier next time. If you don't know if they've had enough you can just offer them more without having to go and make up more formula. If they are hungry sooner than you expect, it's already ready. If they are still asleep longer than you expect, you don't need to worry about the milk getting cold or going past the recommended storage time. If you know you're going to be in the car for a while, you can offer them a quick feed first or a strategic one 30/60 minutes in advance.