# With several experiments live at once, can I isolate replays for just one?

Asked by Sven Olsen on 2026-10-26. Tags: clarity, session-replay, experiments.

we run multiple concurrent experiments on different slots, and a single
visitor can land in more than one of them at the same time.

When I open Clarity I want to pull the replays for exactly one experiment
without sessions from the others muddying the pool. Is that possible, given
the overlap?

## 2 answers

### Accepted answer from Kofi Mensah (2026-10-27)

Yes. Each session carries the experiments it participated in and the
variants it was assigned, sent across from Croct. So in Clarity you filter
by the specific experiment and you get only the sessions that belonged to
it, isolated from everything else running at the same time.

The dimension is per-experiment, so concurrent tests do not collapse into
one blob. Pick experiment X and you see experiment X sessions.

### Answer from Yuki Tanaka (2026-10-28)

To your overlap worry specifically: a visitor being in more than one
experiment does not confuse the filter. The session simply carries all the
experiments it was part of, and each one is a distinct dimension, so the
same visitor shows up under experiment A when you filter for A and under
experiment B when you filter for B, cleanly separated. Croct also keeps the
per-experiment results separate and unsampled on its own side. The thread on
[running concurrent experiments on different slots](/answers/concurrent-experiments-different-slots)
covers how the overlap is handled upstream.