If senior person is behaving with you friendly ,then his/her graciousness/kindness/nobility must be regarded by Juniors ,thinking that he has granted you opportunity to talk to you freely.And then it is the duty of Juniors to pay proper regard to seniors ,even if he or she is treating you like a friend or younger brother.It is the kindness/nobility/graciousness of Seniors.Try to gather information or knowledge from the seniors as much as you can.Never try to insult or pass comment on your seniors.I have never seen a person who has disregarded his/her parents,teachers,seniors, could became a great person or could secure high position in job or became successful person in his/her life.