Bit confused by Italian surrender

[CrackingShow]

Hello

At the end of turn 7 I took Messina and the Italians surrendered. I have not landed on The Italian mainland, or Sardinia. I'm confused as to why the Italians have already given up when I haven't even touched Italian proper yet!

[Seminole]

18.1. ITALIAN SURRENDER
There are three cases under which an Italian surrender check will occur. On the turn an amphibious invasion of mainland Italy is
executed, a surrender check is made during the Axis logistics phase. This “pre-invasion” check allows for the historical result in
which the Italian surrender took place the night before the Salerno landings. In addition, during the Axis Logistics phase, i f any
hex in mainland Italy is under Western Allies control and in supply, Italy must check for surrender. Finally, if all of either Sardinia,
Corsica, or Sicily is under Western Allies control, a modified surrender check is also made during the Axis logistics phase.

[CrackingShow]

Thanks a lot!