Possible Clues:

• Agreement from different enterprises
• Understanding pair of hospital departments impossible, ultimately
• At present entered into friendly understanding
• Understanding, of sorts
• International accord (NOTE: This is the first "three-peater" in this puzzle. There are 14 more -- plus one "bonus-peater" near the end.)
• Understanding two specialists take east
• Inter-state understanding
• Multination understanding
• Friendly arrangement as hospital department doubles intake, finally
• Friendly understanding that could be more than cordial