None

They notified me about a second interview a month after the first interview,

but by then I had already found a job and politely declined.

Later, my supervisor in the U.S. contacted me and said they were ready to give me an offer,

and hoped I could interview with a higher-level supervisor in the U.S.

We scheduled it for Saturday morning, but the higher-level supervisor in the U.S. had something come up and didn't show up that day…

The original junior supervisor asked me about the compensation package of the offer I had received and then went offline.

Of course, they never gave me the offer they had promised afterward,

so was this just an attempt to obtain salary information?

It left me feeling quite bad.