1. Though my friend was trying to get me an interview since the last 3 months, HRs found my profile over a job portal and invited me for a Test Architect position for ETL Testing. This position is meant for people with 10 years of experience and at least 5 years in ETL Testing. HR mentioned that my candidature was an exact match for the requirement.

2. I went to the UHG campus and attended the technical interview.

There is no such pattern/principle for the mode of interview. I don't blame the org here. But I can understand the company trusts their employees discretion about judging the candidates. Sure UHG can improve here I believe.