Given a travel related situation, and given a specific question about the situation, summarize the question into a title

Take for example this flight:

in 45 minutes you have to go through immigration, security checks, and probably you need to go to a different terminal: it's basically guaranteed that you can't catch the connecting flight

If I lose this connecting flight, are airlines required to find a replacement flight to me? (possibly without charge)
If security checks during a layover take too long time and I lose the flight, would the airline find me a solution for free?