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2 added 14 characters in body; edited tags
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1.He said that he was having dinnerwas having dinner when they knocked on the door.

2.He said that he had been having dinnerhad been having dinner when they knocked on the door.

What is the difference in using past continuous & past perfect continuous tense in this sentence? Which tense is apt to use?

1.He said that he was having dinner when they knocked the door.

2.He said that he had been having dinner when they knocked the door.

What is the difference in using past continuous & past perfect continuous tense in this sentence? Which tense is apt to use?

1.He said that he was having dinner when they knocked on the door.

2.He said that he had been having dinner when they knocked on the door.

What is the difference in using past continuous & past perfect continuous tense in this sentence? Which tense is apt to use?

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