A couple more wall-mounted FTTP installs have just gone live in the building in front of mine, and both have been installed with a downlead with what looks like half a weatherproofing grommet left on the cable mid-span (assuming this isn't some kind of a join?). See photo. Anyone know what it is? In both cases the install is to an upper-floor flat and there is no external CSP. Another ground floor installation which does have an external CSP doesn't have this grommet.