B737-800 and unidentified glider cross paths on IFR approach

A Boeing 737-800 on IFR approach to Bremen and an unidentified white glider passed in close proximity at ~1 370 m MSL; no damage, no injuries. Descending through ~1 370 m MSL, the airliner crew received a primary-target traffic advisory from approach control at 12 o'clock, two miles, and acknowledged the sighting; the glider crossed from right to left at roughly 105 degrees, with closest approach reported as ~670 m horizontal and ~60 m vertical (glider above). The event occurred in Class E airspace, where VFR traffic is not separated from IFR. The investigation was closed as a facts-only report; no probable cause was attributed.

1. IFR approach descending to ~1 370 m MSL
2. Class E, no VFR separation
3. Conflicting traffic at 12 o'clock
4. ATC advisory; crew gains visual
5. Crossing ~670 m horiz, ~60 m vert