Contract talks between the Boeing Co. and its engineers union continued Tuesday with the two sides coming to vastly different conclusions on progress.

Boeing’s Doug Kight said the company and Society of Professional Engineering Employees in Aerospace reached a “significant milestone” in the Tuesday meetings.

SPEEA’s take? The union said it was disappointed over “incomplete” responses from Boeing.

“We were encouraged that the company was talking and engaging us at the table but today we hit some unfortunate stumbling blocks,” said Ray Goforth, SPEEA’s executive director.

It’s tough to tell what’s really happening behind closed doors. But SPEEA has said for several days that major issues remain including medical benefits, wages, pension and Boeing’s intent to separate 100 Utah engineers from the bargaining unit. While that sounds like a negative, at least the two sides continue to talk — a 180 degree switch from Boeing’s negotiations with the Machinists, when the company cut off discussions by making a final offer with days remaining in scheduled negotiations.