Just to update you guys on what has happened so far.
I emailed Patek about a month ago asking them this question. I got no reply so far, so I decided to use the watch while swimming in the pool. As in the pictures below, I started the chrono underwater, waited a bit, and stopped it. I wore some goggles and looked at the watch underwater during this process. I did not notice any air bubbles escaping. I then went to the deep end of the pool and went down about 1.5 meters, started the chrono and kicked off to do my laps. When I was done I made sure to stop the chrono while I was underwater. I made sure to clean the watch thoroughly after I got out of the pool and put it in a standing position (dial facing up and crystal facing down) for about a day. I took a look at the crystal back and did not find any evidence that water had entered the watch. It has been running perfectly fine since then. So far I’ve done my laps with the watch two other times seemingly without any issues. I should be in Singapore sometime next month, so I’ll go to GMT and have them take a look at it so I can know if the seals were compromised while using the chrono underwater. Here’s hoping they are still intact...