So whenever you sleep dart Bundry Rothwild you get a slowdown, because he is considered a target, but Abigail Ames can also be interrogated and she does not cause a slowdown. There is a slight problem with this, which is that Rothwild will begin talking to you if he sees you, which is also slow. The way to mitigate this is to damage him it which case he will be scared and will flee. So my proposed strat is to shoot Rothwild with a regular dart in the leg which won't kill but will scare him, then blink forward like you normally would, and then sleepdart Abigail and do the rest of the strat as normal.

Edit: Seems like Billie Lurk gives you an extra unskippable line, after the interrogation. RIP strat.