It's been over 10 years since I connected at ZRH, though I've arrived/departed there more recently. I'm booking a trip for a family friend who doesn't have a ton of experience with international travel but has basic knowledge. I'm looking at an itinerary for her that's a 90-minute connection from a LH puddle jumper arriving from MUC to a UA flight bound for IAD. If it was Heathrow I wouldn't even attempt it for an unexperienced traveler. Wondering what folks here with experience on the distance between these two Star Alliance carriers think?