Not precisely. To be more precise the first 4 stages of samadhi are called "jhana" in the suttas. The last 4 stages of samadhi are called "ayatana."
The story of the Buddha's enlightenment is in MN
26 and
36. In those suttas we find that Siddhartha Gautama mastered the upper 4 stages of samadhi under his 2 teacher Uddaka Ramaputa, and Alara Kalama; however, he found his suffering (dukkha) had not been relieved, so he left his teachers and wandered and meditated.
After sometime of wandering and meditating Siddhartha Gautama sat under the bo tree and recalled a time when he was boy and he meditated under a rose apple tree, and he then experienced the first jhana. That recollection apparently triggered for him the experience of the first jhana again. He found the bliss and joy compelling and it gave him the insight to go further. That night he traversed the 4 jhanas, after which he claimed he was enlightened.
He at no time rejected the upper 4 stages of samadhi, called "ayatana." In fact MN
26 he stated that all 8 stages of samadhi are required to attain full liberation. However, the definition of the 4 jhanas includes freedom from the unwholesome states at the level of an arahat. And, this has been my experience.