If two spaces were separated by a wall-like barrier where time flows differently on each side, passing through such a barrier would likely result in experiencing a sudden shift in the perception of time. The exact nature of this shift would depend on the specifics of how time flows on either side of the barrier.
Here are a few possibilities:
Time Dilation: One side of the barrier might experience time dilation, where time appears to move slower compared to the other side. If you were to pass from the dilated side to the normal side, you would experience time suddenly speeding up. Conversely, if you were to pass from the normal side to the dilated side, time would appear to slow down.
Time Compression: The opposite of time dilation could occur, with one side experiencing time compression, where time moves faster. Passing through the barrier from the compressed side to the normal side would make time seem to slow down, while passing from the normal side to the compressed side would make time appear to speed up.
Temporal Discontinuity: Instead of a gradual change, passing through the barrier could result in a sudden discontinuity or jump in time. For example, you might enter the barrier in one year on one side and exit it on the other side, experiencing a significant time difference.
It's important to note that these scenarios are based on speculative ideas about how time might behave in such situations. The concept of a barrier that separates spaces with different temporal flows is purely hypothetical and not currently supported by scientific evidence or known physical phenomena.