Q: If I had a pleasant conversation with him and his wife., can we say that "He and his wife and I had a great conversation."?

A: yes

Q: If 'There's been no sign of error?', can we say that "I don't see there was any mistake?"?

A: yes

Q: If yeah make it difficult enough, can we say that "Make it easy enough."?

A: no

Q: If The problem is that the dome is cracking like a great, smashed eggshell." "What's beyond the dome?" Ser Perth shuddered slightly., can we say that "The dome was created thousands of years ago to keep dangerous pathogens contained."?

A:
it is not possible to tell