The phrase "although they basically" is correct and usable in written English.
It can be used to introduce a contrast or exception regarding a statement that follows, often implying a simplification or generalization.
Example: "Although they basically agree on the main points, there are still significant differences in their approaches."
Alternatives: "even though they essentially" or "despite the fact that they fundamentally".
But much of the analysis has ignored that many Arab countries, although they basically share the same language and religion, are very different in their history, culture, economy and politics.
Although they basically operate automatically, some hands have leaked their contents to the alternative information networks.
Although they are basically consistent in method and aim, Claude's paintings show a gradual stylistic evolution, and it is possible to distinguish the phases of his development.
Interns tend to be even younger — nineteen- and twenty-year-olds taking a summer job or some time off from school — although they do basically the same work, usually minus the salary.
As comprehensive care strategies have to consider the health and long-term care needs of dementia patients, the chosen perspective includes both the SHI and the LTCI, although they are basically independent insurance branches.
When the subprime squall swept through Wall Street, last summer, many described it as a "liquidity crisis," by which they basically meant that, although lenders and investors were too traumatized to put their money at risk, the financial system remained fundamentally sound.
June 22nd: Not one ad this time, but three — although they're all basically the same.
Advertisements for the 2008 Whitney Biennial promise a show that will tell us "where American art stands today," although we basically already know.
Although GQ basically supports growth-decoupled product formation, AQ enables maximum cell-specific peaks of productivity and accelerates growth.
Although we basically adopt ā = 0.1 μm, we also examine ā = 0.01 μm for a quick growth case, later.
Although we basically considered that the plate interface in these subregions was fully ruptured by the mainshock, the coseismic slip possibly did not reach the western end of the deepest subregions; in particular, in subregion 1.
