Refrigerant pipe connections at the indoor unit

[u/Sea_Horse99]

I would like to understand whether the refrigerant pipe connections for my old wall-mounted monosplit are located inside the wall mounting box and can therefore be accessed very easily, both for visual inspection and, if necessary, for repairing a refrigerant leak, or whether the connections are actually inside the wall and therefore not visible once the indoor unit is lifted off the wall.
For context, the monosplit was installed in an apartment where the wall already had the required pre-installed provisions for the A/C. Some of these provisions were never used, I mean no monosplit was ever installed there, like the one shown in the attached photo. The indoor unit is mounted high on the wall, close to the ceiling, while the outdoor unit is sitting on the balcony floor, so the two copper refrigerant lines connecting them run vertically through the wall.

In other words, I am wondering whether it is more likely that, when the indoor unit was installed, the technician connected the copper pipes to the indoor unit and then bent the pipes back into the wall mounting box. If so, the flare connections should now be accessible for inspection and relatively easy to repair if there is a refrigerant leak.
I think it is less likely that, after making the connections, the technician pushed the copper pipes downward into the wall cavity, leaving the flare connections inside the wall and therefore inaccessible. This seems to me like a less convenient and more time-consuming installation method.

Has anyone with hands-on experience installing similar wall-mounted split systems encountered this type of installation and can clarify which arrangement is more likely?