If you mean knocked out completely, yes.
There is no way anyone in theatre would be wearing their own overclothes, but everyone would be in scrubs (of different colours) and also different levels of PPE depending on their role within theatre.
As you had a GA you would not have witnessed theatre dress, as you would almost certainly have been induced in a separate anaesthetic room, before being transferred to theatre and then post op regained consciousness in the recovery facility.
Clothing is less stringent outside of theatre and in the anaesthetic room, but hospital staff would still normally be wearing scrubs. There is an option for some visitors to wear a gown over their clothes for a short term visit.
Can you clarify these two descriptions. Were they wearing scrubs over or under their jackets? Did the anaesthetist have a theatre cap over his hat with flaps?
I kid you not, the Anesthetist sitting above me on the table, waiting for the surgeon, was wearing a puffer jacket, a thick scarf and one of those hats with flaps over the ears.
I should clarify, they had the scrubs and hair things on, as normal, but coats fleeces and scarves too, except one overweight guy in the theatre.
Temperature control is fairly strict in theatres and each one will have its own air circulation system controlling air exchange rate, temperature, humidity and filtration. Temperatures are usually maintained at between 21C to 23C but should not drop below 21. This is considered optimal for staff working and is lower than the usual hospital temperature elsewhere, where 23C is a desired minimum. Because of the lower temperature in theatre it is less ideal for the patient and blankets may be used to maintain body temperature for safety reasons. This is very important for the patient and is monitored.
Theatre suites may seem a little 'chilly' on entering in comparison to outside of them, but 21C would not require scarves, jackets and hats to be worn. If there is a technical issue with the air control system including temperature maintenance , the theatre would not be in use.
I'm struggling to explain your experience?