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The H.E.S.S. collaboration recently published its Galactic Plane Survey,which is a deep survey of half of the Milky Way in TeV gamma-rays, using almost10 years of observations. It contains 78 sources, including 16 new sources. Onthe other hand, the HAWC collaboration also published its 2HWC catalogue basedon 507 days of data. It is the result of the first source search performed withthe complete HAWC detector, covering two thirds of the sky. In this search, 39sources have been reported, amongst them 16 detected for the first time at TeVenergies. The HAWC data set doubled since then, revealing 10 more sources. Bothinstruments are very different in terms of conception, observation andregarding event analysis and reconstruction, but they operate at a similarenergy range. In a sense, they are very complementary. I will present acomparison of the Galactic plane seen by both instruments in the overlappingregion, highlight the similarities and differences which arise from intrinsicproperties of the instruments and from their dedicated data analysis, and showthat background estimation is a major ingredient.

A complementary view of the Galactic plane in TeV gamma rays by HAWC and H.E.S.S