Change terminals in Dublin airport T1 to T2 [duplicate]

I would be boarding a flight from Mumbai to Toronto via London and Dublin (2 Layovers). At Dublin I would require changing terminals from T1 to T2. If my entire journey is booked on a single PNR and I would not have to recheckin luggage, then would I be needing a Transit Visa? (According to the Government of Ireland, I wouldn't, but in anycase, if I would be exiting the terminal or crossing the border in the airport, I might, nevertheless, require some kind of visa). Please help.

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How do I get from Terminal 1 to Terminal 2 at Dublin Airport?

Getting back and forth between terminals at Dublin Airport is easy. An indoor walkway connects the Departures Area in Terminal 1 with the Arrivals Area of Terminal 2. From Terminal 1, exit the baggage reclaim area, turn right and take the escalator up to the next floor. The walkway is across from Check-In Area 1.

Can I walk from Terminal 1 to Terminal 2 at Dublin Airport after security?

Dublin Airport Terminal 2 is close to Terminal 1, and there are no shuttle buses or light railways connecting the two. There is, however, a covered walkway that will keep you dry as you cross from one terminal to the other. The walkway is in the spacious Arrivals Hall.

Are Terminal 1 and 2 connected Dublin?

T2 is linked to Terminal 1 both landside and airside. This means that if you're a transfer passenger, you can get to your boarding gates quickly and easily.

Do I have to go through security again for connecting flight in Dublin?

I am concerned that I might not have enough time to make my connecting flight (one hour and fifteen minutes between flights). Thanks for the advice. If you have an onward connecting flight, ie one ticket, or onward journeys made on the same booking. You will not need to pass through security customs or immigration.

How to go Terminal 2 from Terminal 1 by free shuttle (Incheon airport)

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Images: Mike van Schoonderwalt, Oleksandr Pidvalnyi, Tanathip Rattanatum, Pixabay