Welcome to Dharma Wheel!
Thanks for stopping by. I think it's great when there is friendship between people who practice different sects of Buddhism.
I think that this is very much in accord with Buddha's teachings.
Very true, I am still amazed and happy about the camaraderie between different schools. The minor discord that sometimes happens pales in comparison to the fighting and even wars that have occurred in other religions.
Monastics from all traditions are welcome at each others' temples. Bhikkhu Bodhi is at a Mahayana monastery. Ayya Khema lived at (for a period of time) and ordained at a Mahayana temple. Mahayana clergy have stayed at Theravada temples too.