On your car the shift delay is actually from 2nd to 3rd.
You know, I've never actually counted the shifts, but I'll take your word for it that the upshift delay is fron 2nd to 3rd.
However, I'm pretty sure my transmission starts in 1st gear, not 2nd.
I remember reading that the change to a 1st gear start began in 1991.
2001 E430, Bourdeaux Red, Oyster interior.
1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".