Tim, thanks for the reply.
It seems that the number of segments are what I would expect. It was my initial intention to include the longer line. For further testing on this particular fabric, I ran the Merge Colinear Parcel Boundaries on all the Tax_lines (with a 2ft offset), then ran the SLACA tool (.5ft offset) on both Tax_lines and Tax parcels, then ran the update COGO on all the lines. The line in question did end up with a distance, however no curve parameters. The other line has curve parameters. So, is this to be expected?
BTW, I made a copy of this data prior to running these tools and then checked the data against the original and it looked really good, no noticeable offset.