From my very shallow understanding of CLR/CIL it seems to me that CLR's object model is significantly closer to Smalltalk than JVM's, at least because IIRC CLR

From my very shallow understanding of CLR/CIL it seems to me that CLR's object model is significantly closer to Smalltalk than JVM's, at least because IIRC CLR has send-like opcode since the beginning, while JVM for a long time had only bunch of specialized invokefoo, with "call n-th method of something" semantics.