mitsuwao23 1) Since I don't fully understand the meanings of "granted" and "waiver", can't be sure what this part means. granted a waiver = allowed an exception That is, Delta didn't want to make those flights so it asked permission to discontinue them. mitsuwao23 2) "returning to" should mean like "going back to" Yes, but not in the sense of going somewhere from Japan and then returning to Japan.
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mitsuwao231) Since I don't fully understand the meanings of "granted" and "waiver", can't be sure what this part means.granted a waiver = allowed an exception
mitsuwao232) "returning to" should mean like "going back to"