From this train station i'll catch the train to Innsbruck the one that departs on Is this enough time to find the correct platform? If both trains are on the same ticket then it's no problem as you can simply take the next train if the first is late.
Also, I amnt sure how you are getting to the airport, but if you happen to be there 20 or 40 minutes earlier then you could take the previous train as through tickets with feeder local trains to long distance services allow you to take any local service before the mainline train. DB timetable gives only connections one can make.
But always the tightest possible connections, as long you don't increase the transfer time manually. Now for a first timer at a station with lots of luggage such a transfer can be indeed become tight.
When arriving at the airport best is to take always the first S-Bahn to the Ostbahnhof you can make it on. To wait there for the latest possible one makes no sense at all.
They are connected by an underpass. The distance between track 1 and 8 is less than 60 m. Most time consuming is normally to take the lift as here others can there before you and you'll have to wait until the lift is ready for you. Of course if my plane'll land on time i'll catch the first S8 to Munich Ost as i don't have problem with the ticket.
