I applied through an employee referral. I interviewed at RTX (New York, NY) in Jan 2018
Interview
Attended only the initial round with basic questions like your professional experience, your software skills and questions on specific industrial skills were asked. Some behavioral questions were also asked in the phone screening
I applied through college or university. The process took 3 weeks. I interviewed at RTX (Tewksbury, MA) in Oct 2014
Interview
Applied through school career center and was notified within two weeks regarding the interview selection. Was greeted onsite by a current employee in the program, and was then taken into the interview which was with five executives simultaneously. Although you were forced to interview with multiple executives, they ensured that you felt comfortable throughout the process.