What is going on here?

What is going on here?

Observation - What is going on here? - UK and Ireland. Description: Two bees locked together for more than an hour though unsure how long. Larger one c 3 cm long. The

Two bees locked together for more than an hour though unsure how long. Larger one c 3 cm long. The garden is full of bees just now. The smaller one flew upwards into bushes and the larger one crawled off into undergrowth as I watched them.