Teal'c: When you did not return for several hours we began to suspect that something may have gone wrong.
Vala: Well we just assumed that the machine had malfunctioned and you were stuck out of phase.
Teal'c: We attempted to communicate with you using the Sodan cloaking device, and when that failed...
Vala: We took shifts, trying to keep you company.
Sam: You mean...?
Mitchell: Yeah, we talked to an empty room.
Sam: For two weeks.
Mitchell: It did stop eventually, but it did go on for quite some time.
Sam: Well that must have been some conversation.