Not every cursive font connects its letters. A font is fully joined when the outlines of adjacent lowercase letters touch across essentially all 676 pairs; semi-joined when the designer left deliberate gaps, often after b, o, v and w; unjoined when letters simply sit side by side. If your text looks broken up in a script font, this is the list to choose from.
Measured, not claimed
The classification comes from an automated audit that renders every lowercase pair and checks for contact between the outlines. Fonts where essentially every pair touches are fully joined; fonts with deliberate gaps after certain letters are semi-joined, and each of those pages lists the pairs that stand apart, so if your word contains one of them you know before you export. For teaching handwriting, joined display fonts are still not instructional faces; the worksheet generator uses classroom models with the joins schools teach.