W. R. Grace & Co. Senior Catalyst Scientist interview questions

Applied on their corporate site. Several days later received email from Talent Acquisition person to schedule phone interview. On the day of interview no call received, send email later same day and was able to reschedule for other time. On second attempt, Talent Acquisition person called with huge delay from scheduled time. Afterwards, went to next stage - interview with hiring manager via phone. Process involved standard questions about my experience related to the job. The crown of the whole process was the reply hiring manager provided on when to expect the outcome from the screening by saying that I do not know the subject matter we discussed and that they have much better candidates lined up. Very unprofessional behavior throughout the process.