Are Hunter x Hunter 1999 and 2011 the same series or different

A look on the arcs of “Hunter × Hunter” (1999-2001; 2011-2014) [Part II]

Should i watch the 1999 or 2011? Some say 2011 others say 1999, some say first 1999 then watch 2011, one guy told me to watch the FIRST EPISODE of 1999 only

Hunter X Hunter 1999 Vs 2011 Animation Comparison

Hunter × Hunter (2011 TV series) - Wikipedia

Hunter X Hunter Complete Anime Series Collection + Movies + OAV (DVD 1999, 2011)

5 Things You Might Not Know About 'Hunter X Hunter' (Update 2023)

Hunter x Hunter on X: Anime : Hunter x Hunter (1999) / X

How to Watch 'Hunter x Hunter' in Order, Including the Movies

Ｄｅｍｏ Ａｎｉｍｅ - Hunter X Hunter // 1999 vs 2011

Hunter x Hunter on X: Anime : Hunter x Hunter (1999) / X

HxH on X: Anime : Hunter x Hunter (2011 vs 1999) / X

Hunter X Hunter: Where to pick up the manga after the anime?