Student or Learner
"They can't be coming or else they'd have called."
Is the above sentence complex or compound?
I think 'or else' is a subordinate conjunction, and if so, then the sentence is complex.
Correct me please.
I would say it is compound because the two clauses can easily be separated into two simple declarative sentences.
1. They can't be coming.
2. Otherwise they'd have called.