"or consolidation" is a perfectly correct and usable part of a sentence in written English.
For example, "The company intends to grow through acquisition or consolidation."
There is no extension or consolidation, there is just the same stuff.
A bit of economic liberalization, and some brazen asset redistribution or consolidation: that's Putinism, and a picture of continuity.
There was so little cooperation or consolidation that Condé titles actively competed with one another for ads.
Companies considering moves or consolidation routinely scour the entire market, visiting every place big enough to accommodate them.
Moreover, they could do that without gaining any of the efficiency benefits of an actual merger or consolidation.
The schools have one year to correct deficiencies or face penalties that could include the removal of administrators or consolidation with other districts.
Additional procedures during the lengthening or consolidation period were noted.
The report called for no closing or consolidation of labs.
Parenchymal calcified nodules or consolidation may be seen in pulmonary amyloidosis.
What remains to be seen is who else will survive by either acquisition or consolidation.
