Not an ideal situation.
Have you ever experienced lengthy delays?
A few years back we were on the train from Vienna to Salzburg and it just came to an abrupt stop.
The driver had no idea when it would be fixed. He didn't keep the passengers updated either which didn't help.
Eventually we got moving again. When we finally arrived in Salzburg we had to run to catch the bus to the airport.
Already running late and stressed, then the electric bus comes to a halt as they are working on the cables ahead!
Fortunately after all this fiasco the plane was late, so it ended up ok.
When I am planning multi city trips now, i ensure that on the day of the flight we are in a city closer to the airport.
Apart from this episode we have been very lucky with delays.