Something similar
We were booked with SWISS from Geneva to Zurich at 9am for an onward connection to Kuala Lumpur with Malaysia Airlines. The flight takes 30 minutes, however moments before boarding the flight was postponed due a snow microburst over Zurich airport.
We eventually arrived in Zurich and taxied to the gate, watching in dismay as our connecting flight pushed back and departed.
SWISS then rerouted us via Bangkok to Kuala Lumpur using SWISS and Thai airlines.
We arrived home 18 hours later than scheduled with lots of stories to tell our friends.
Now, in today's world would there be grounds to make a claim.
To clarify, the Ticket was SWISS, KL - GVA -KL, the longhaul carrier was Malaysian.