This trip is complete now, so please find below the detailed review.
A few days before the trip UA opened up J space on BNE - SFO route and I cancelled the DL and VA flights and rebooked on UA using AC miles as it was cheaper. Big mistake as the service on UA was just horrendous. P2 had selected - wake me up for breakfast but they never woke her up or gave her anything. When she asked - the FA replied - "Oh - would u like to eat now??"
Anytime we asked something - they behaved as though we were asking for their body part.
Also changed AA flight from LAX - BNA to SFO - BNA but the phone rep didnt do it right as their system showed LAX - BNA even though in app it was SFO - BNA.
The agent at the counter was on phone with their CS for like an hour before they could fix it. Luckily we had like 4 hours transit time which helped.
The routing was SFO - DFW - BNA and we got an upgrade on the DFW - BNA flight.
AA service was nothing to write abt but it was still better than UA.
One thing though - this month they have a 75k miles offer on their credit card and they were pushing it hard - atleast 5-6 times on each leg.
For the BNA - ZRH leg, a week before J space opened up on BNA - YYZ - YUL - ZRH with first 2 legs on AC and last leg on Swiss air.
I booked using AC miles as this was not available elsewhere.
Then the wildfires started and there so many cancellations, so I just started looking elsewhere and the day before space opened up on IAD - AMS - ZRH on KLM. Booked this using flying blue miles.
In hindsight this was better as this was landing in ZRH at 11 AM and the Swiss air was 06:15 AM.
No way we would have gotten the room at the Renaissance Lucerne Hotel if we showed up at 9 AM but it was ready when we cane at 1 PM.
KLM J seats are so - so but their service was outstanding, I wouldnt mind flying them again even with their sub par seats.
The highlight of the trip was flying qsuites from ZRH - DOH - MEL - ADL. This is a weird routing as u have to do a 6 hour layover in MEL when there is nothing open. Luckily for us the flight got delayed for 3 hours from DOH which meant we had to only spend 3 hours in MEL airport.
The service in qsuites is just outstanding, the best we have ever received. Nothing else comes close to it.
But I would not fly this route again. It took almost 37 hours to reach BNE airport where as SQ (the flight I had originally booked would have taken 26 hours).
Its not really worth the extra 11 hours of travel and transit and what not.