Unidentified Hawk Moths

Unidentified Hawk Moths

Observation - Unidentified Hawk Moths - UK and Ireland. Description: Pair of unidentified Hawk Moths, see mid-June last year on the wall of our house.I presume that being tied like this, that they were mating ? However, I was amazed by the lenghth of time they stayed in this position (total of four days)before they final

Pair of unidentified Hawk Moths, see mid-June last year on the wall of our house.I presume that being "tied" like this, that they were mating ? However, I was amazed by the lenghth of time they stayed in this position (total of four days)before they finally separated and flew off. The weather was fine and dry at the time, so probably not due to that. Is this normal ? It seems to present a high risk of predation to remain so for such a length of time.