여기서 that이 접속사로 쓰인건가요?

The manufacturer of the food has a view {when making or growing something} [that by the time the product reaches the shelves it has already been travelling for so many days and possibly many miles].

that이 a view와 동격으로 쓰였다는데 that이 접속사로 쓰일려면 앞에 선행사가 없어야하지않나여?

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{when making or growing something}은 삽입분사구문이고

that절은 a view의 내용을 나타내는 동격절입니다.