Beneath the headline-grabbing prospect of a Tesla (NASDAQ: TSLA) and SpaceX (NASDAQ: SPCX) merger lies a structural problem that analysts say could prove deeply difficult to resolve.

Tesla’s substantial manufacturing presence in China is fundamentally incompatible with SpaceX’s national security-sensitive operations, creating a structural hurdle that dealmakers would need to address before any combination could close.

Discussions are nonetheless advancing at pace, with Bloomberg reporting this week that a formal merger announcement could come as early as December, though the timeline may extend into early 2027 given the transaction’s complexity.

At the heart of Elon Musk’s push is a desire to consolidate control over his two largest companies, with sources indicating he wants the deal completed sooner rather than later.

Political timing is adding urgency to the process, as the window under the current administration is finite, with President Trump having only a couple of years remaining in office.

The post-midterm environment introduces its own complications, with a newly seated Congress expected to apply significant scrutiny to anything connected to Musk, Tesla, or SpaceX that could slow the process considerably.

On the China question specifically, one proposed solution would involve ring-fencing Tesla’s Chinese operations as a subsidiary sitting outside the merged entity’s core structure, though the precise mechanism remains unresolved.

Some observers have also floated the idea of spinning off Tesla’s Terrafab unit as a separate step that could clear the path toward a cleaner merger structure between the two flagship businesses.

Musk himself has added another dimension to speculation about the group’s future leadership, having written on X that it “would be an honor” to hire Nvidia chief Jensen Huang, though no formal approach has been reported.

Both stocks traded lower Friday, with Tesla shares falling 2.07% and SpaceX shares declining 1.02% as investors weighed the complexity of the proposed transaction.

Separately, SpaceX is preparing for what could be a landmark test tonight with the Starship 15 mission, which will attempt to catch both the rocket’s booster and the Starship vehicle itself for the first time.

The booster recovery maneuver has been demonstrated previously, but catching the Starship upper stage represents a new milestone in the company’s ambitions for full reusability.

During its previous flight, Starship touched down in the intended zone but was not retrieved via the catch mechanism, leaving that capability unproven ahead of tonight’s attempt.

The mission will also deploy 26 next-generation Starlink V3 satellites across a flight plan spanning approximately 22 hours and 14 orbital passes.