"Awhile" is understatement. O'line recruiting has gotten worse last few years. Not same, not better, worse and downright abysmal this year. At this rate 2033 could be promising.
Additionally,
Nebraska OL Recruiting by Year
2008- **** Steinkuhler (played DT his whole career) *** Thompson (miss), *** Henry (hit),
2009- ***Sirles (hit), *** Ash (miss), *** Qvale (hit), *** Coffey (miss)
2010- **** Rodriguez (debatable), **** Hardrick (hit), *** Moudy (miss)
2011- **** Moore (hit but left after 1 year), **** Reeves (debatable), **** Klachko (miss), *** Sterup (ended up decent) *** Price (miss)
2012- **** Thurston (miss), *** Whitaker (miss)
2013- *** Knevel (debatable), *** Hannon (miss), *** Johnson (miss), *** Finnin (miss), *** Kondolo (hit)
2014- **** Farmer (hit), **** Gates (hit) **** Foster (hit)
2015- **** Barnett (N/A), *** Gaylord (miss), *** (hit/quit)
2016- **** Raridon (miss), **** Farniok (hit), *** Brokop (miss), *** Wilson (hit/just left)
2017- **** Jaimes (hit), *** Sichterman (miss), *** Bando (currently miss but may get shot this year) *** Walker (currently on DL)
2018- **** Jurgens (hit so far), *** Farniok (miss), *** Canty (never made it)
2019- **** Benhart (hit), *** Lynn (N/A), *** Banks (N/A) *** Anderson (transfer), *** Piper (hit), *** Fritzsche (N/A) *** Bland (never made it)
2020- **** Corcoran (hit), *** Conn (N/A), *** Nouili (N/A) **** Miller (N/A)
2021- **** Prochazka (N/A) *** Lutovsky (N/A), *** Yager (N/A)
I find it hard to imagine that you wont see a couple more hits out of the 2019-2021 class when it is all said and done.