Running the endline after a time out

[ref18]

So I was discussing running the endline following a time out with Brandan89 tonight, and we came up with the following question:

Team A scores, B completes their throw in when the head coach of B requests a time out, the officials grant his request and the subsequent throw in will be on the endline. Is B able to run the endline or is this a designated spot throw in??