Synechron Senior Developer interview questions

I interviewed at Synechron in June 2024 only which roughly took 2 weeks. Interview process and team was very good. But manager was very disappointing, rude, unprofessional and very controlling. Asked me to cancel my travel plan which I had planned 6 month back. How could a manager ask to just join leaving everything else like a slave. Later I just declined the offer.

The interview level was difficult and they will ask you about Core Java, Java 8, advanced topics, multi-threading and system design and coding questions as well. the recruiter was rude.