Ben Wallace followed by Jason Kidd is the answer for the most recent back-to-backs to reach the Conf Finals without an All-Star teammate, I think, though both reached the Finals (and Wallace won one).
Just going back to Reggie's era, since that's what we're discussing, these players won the championship without another All-Star that season.
Players who reached the Finals with no All-Star teammates and lost.
- 2016 Cleveland Cavaliers — Lebron James
- 2014 San Antonio Spurs — Tony Parker
- 2011 Dallas Mavericks — Dirk Nowitzki
- 2004 Detroit Pistons — Ben Wallace
- 2003 San Antonio Spurs — Tim Duncan
- 1998 Chicago Bulls — Michael Jordan
- 1994 and 1995 Houston Rockets — Hakeem Olajuwon
- 2009 Orlando Magic - Dwight Howard
- 2008 Los Angeles Lakers - Kobe Bryant
- 2007 Cleveland Cavaliers - LeBron James
- 2006 Dallas Mavericks - Dirk Nowitzki
- 2005 Detroit Pistons - Ben Wallace
- 2002 and 2003 New Jersey Nets - Jason Kidd
- There was no ASG in 1999 but it's safe to say no New York Knick would have made it, let alone multiple.
Not to many people look at it that way the majority of those guys had allstars on their teams who happened to not be on the all-star teams that particular year.
1995-Rockets had Drexler, he made an all-star game in 96 and 97
1998-Pippen didnt play till February
2003-Duncan had an older Robinson and a young Parker and Ginobili
2004-Pistons did not have any superstar players on their team like the Lakers had with Shaq and Kobe they did have 4 all-star level guys in the perfect roles in Sheed, Rip, Billups and Tashaun Prince was the perfect glue guy to that team.
2014- Duncan had a better season that year then the year after where he was an all-star.
2016-Kyrie was coming off an injury the previous year.
1999- Knicks had Houston and Sprewell who were both at all-star level.
2008- For some reason Gasol was not an all-star despite averaging the same numbers the following seasons, sure being on Memphis had something to do with it.
2009- Jameer Nelson was actually an all-star in 2009 so you are factually wrong there.