Originally Posted by
Valzar
I am BA Executive Club Silver (oneworld sapphire) and booked an return eco flight from HKG to ZRH through Cathay Pacific. Flight was ticketed by Cathay but is operated by Swiss. At the same time I am also Star Alliance Gold (Miles&More Senator).
Welcome to Flyertalk
Valzar and welcome to the BA forum, it's good to see you here.
You won't get tier points, Avios or lounge access due to your Silver card. You will probably be able to access the set of contract lounges in HKG, particularly if you persuade the Swiss check-in agent to add your Senator card to the booking. There are several lounges open to you, maybe not as good as the Cathay series, but it does include Plaza Premium East, by gate 1. Star Alliance is similar to
oneworld Alliance in that you will earn Award miles (Avios equivalent) but not Status miles (Tier Points) when flying on a Cathay marketed flight. This assumes you are booked as a codeshare (CXnnnn flight number) rather than than an online to prime booking.