Searching in a table on a column using a polymorphic relationship

//Account Model
    public function contact(): MorphTo
    {
        return $this->morphTo(__FUNCTION__, 'contactidtype', 'contactid');
    }

//Customer & Employee Models
    public function account(): MorphOne
    {
        return $this->morphOne(Account::class, 'contact', 'contactidtype', 'contactid');
    }

TextColumn::make('combinedName')
                ->searchable(query: function (Builder $query, string $search): Builder {
                   return $query->where(function ($query) use ($search) {
                          $query->where('contact_type', 'Customer')
                              ->whereHas('contact', function (Builder $q) use ($search) {
                                      $q->where('cust_name', 'ILIKE', "%{$search}%");
                               });
                          })
                         ->orWhere(function ($query) use ($search) {
                               $query->where('contact_type', 'Employee')
                                ->whereHas('contact', function (Builder $q) use ($search) {
                                    $q->where('emp_name', 'ILIKE', "%{$search}%");
                                });
                           })
                }, isIndividual: true)