Complex sentence: Charles Bickford, Jeff Bridges, Robert Duvall, Ed Harris, and Al Pacino have each had three unsuccessful nominations, though Bridges, Duvall and Pacino all have won an Oscar for lead actor.
Split into simpler sentences: Charles Bickford, Jeff Bridges, Robert Duvall, Ed Harris, and Al Pacino have each had three unsuccessful nominations. Though Bridges, Duvall and Pacino all have won an Oscar for lead actor.